Preflight

lecture preflight 02
1: Smelling soup cooking might be thought as evidence because some of the cooking soup will turn into a vapor (gas) and the gas molecules will diffuse through the air. If air consists of atoms and molecules than soup also also will. The smell of the soup will be dectected by the gas moleclues it gives off when it is cooked.
2: We learn about magnets and the magnetic field but we can't see the force. We also learn about plate tectonics but we have not seen them, except rifts. Also, parts of the electromagnetic spectrum such as infrared and radio waves.
3: Gases do have a weight because atoms have a weight, even though it is so small, and gases are made of molecules that consist of atom. An oxygen atom, for example, has an atomic weight of 15.9994 grams/mole. Therefore, you could the weight of a specific container of air.
4: I really enjoyed the cornstarch and water experiment because it was just fun. However, calculating the size of an atom was intersting to learn.
5: How does keyless entry on a car work and how do they only work for one specific car? It has to do with infrared, I think, but how do they program something like this?

lecture preflight 02
1: Just like the perfume experiment in class, the smelling of cooking soupu can be evidence for the existence of molecules. The "smell" molecules from the soup are concentrated at the site of the pot, however, over time these molecules will spread out and disperse throughout the room giving the entire kitchen the smell of warm, delicious soup!
2: Religion and Faith. But as for academics, outside of science, I think we learn about literature from things we cannot see. Although the physical words are right in front of our noses, a good reader will see the story between the lines and see what is not obvious.
3: I think that gases can have weight. It would be much more difficult to measure this weight because a gas is not something that you could easily contain and measure on a scale. But, because weight/matter is never lost (an ice cube is the same weight as its melted water form) I think that a gas has to have weight.
4: The size of an atom!
5: Body temperature: How come I can be FREEZING in the same room as my best friend who is HOT?

lecture preflight 02
1: The aroma you are smelling is coming from the mixture of food right inside the pot. If you can smell it from next room, or even a few feet away, you know that the molecules making up the smell are moving and diffusing about. They start in the pot, then release into the air and move outward to reach you nose that may be far away. The smell is made up of the molecules.
2: When we learn about photosynthesis, and how oxygen and carbon dioxide are apart of that system, we cannot see those two gases, but we learn that they are there. Also, we cannot see heat, but we can feel it. For example, a heating vent in a room releases hot air and kids and animals might go and sit by it because they know it will be warm. They cannnot see the actual heat though.
3: I think gases do have weight. There are gases in the periodic table of elements nad I'm pretty sure the table is arranged by weight or something along those lines. Also, I know that the atmosphere is layered, and maybe this is due to different weights of gases. Also, different planets in our solar system are differnt weights and some are mad eup of just gas.
4: I love learning about liquid nitrogen. It is probably one of the neatest things I've used in any science class. I learned that you CAN stick your hand in, but it will probbaly hurt if you don't take it out really fast. I also learned how to estimate the number of molecules in a object, like a balloon.
5: I remember making ice cream one time in Chemistry. I can't remember the point of that experiment though. We used cream and ice and flavoring and shook it all up. What might have been the lesson/concept we were learning?

lecture preflight 02
1: The molecules in the air are allowing the smell of the soup to travel throughout the air.
2: The weather in the upper atmosphere Anything having to do with the bottom of the ocean
3: Gases do have weight. For example. you could weigh a test tube, then contain gas in that test tube, and weigh the test tube again. The weight of the gaseous test tube will be more.
4: A corn starch and water mixture is not classified as a solid or a liquid.
5: Why do pop cans explode in the freezer?

lecture preflight 02
1: Well there are thousands of tiny receptors in your nose that can detect odor molecules. This is evidence enough for the existence of molecules. The air you are breathing in is being replaced by a molecule with an odor that will eventually reach your nose.
2: Another situation would be if you smell that something is burning. You do not always see smoke but you can detect that burning scent. Another situation is that when you can smell that food is rotten.
3: Gas is a form of matter. Matter is anything that takes up space and has weight. Gas has mass theraby weight.
4: I found it interesting that you when putting the syringe with water in it on your finger you cannot move the syringe then at all. When you just feel the syringe with gases there is a lot of room for the compression of those molecules. I thought it was interesting how much the gas could be compressed.
5: Why is the liquid heavier than the solid.

lecture preflight 02
1: Because we smell molecules so it's the molecules that fly up in the air that we inhale and therefore smell.
2: Temperature. We can't see that it's cold or hot outside, and we can't see if water is cold or warm (except if it's boiling or frozen or ...) but we CAN feel the difference!
3: Yes. Just not the ones we naturally think of, like air molecules. But if we put helium in a balloon, it rises. This is kind of like negative weight, but it is still weight. Or maybe the lack of weight. But regardless, it rises because the weight of the gas in the balloon is less than the weight of the gas surrounding the balloon.
4: I LOVE CORN STARCH!
5: How is yogurt made? Actually, just kidding. I don't want to know. I like it too much...

lecture preflight 02
1: Smelling soup cooking is evidence of existance of molecules because what you smell is actually the molecules from the soup that have been passed around and through the other air molecules to your nose.
2: When we learn about the way in which our brains work we are learning about something that we can not see.
3: No, not all gases have weight. Air has no weight until you try to compress it, which means you are placing a force upon it.
4: I thought it was very interesting how scientists are coming up with ways to use mixtures to make the bullet-proof vests for policemen which remain soft until impact.
5: How do planes fly?

lecture preflight 02
1: When soup is cooking, the molecules change under heat and release an odor. The molecules travel through the air and enter your nose. Althuogh this is not visible, since you can smell the soup the molecules have traveled a distance.
2: The doppler effect and anything about diseases or viruses.
3: Yes gases have weight, if you put gas 'A' into a balloon and gas 'b' in a different ballon they would have different weights when put on a scale.
4: That the molecules are packed together tightly in both a liquid and a solid.
5: Why can you see your breath in winter? What makes cookies and bread rise when cooked?

lecture preflight 02
1: The smells can travel through a room to different places, therefore they have to exsist.
2: When you turn the air conditioner on in your car, you can feel the car cooling down.
3: I think all gases have weight, no matter how light it may be. If it exsists, it has to be something, and if it is somethine, it has to have weight. Right?
4: Cornstartch and water creates a non-newtononian liquid! It is both a solid and a liquid.
5: Why is it so cold this week?

lecture preflight 02
1: Because the scent travels, one must believe that the scent has particles moving through the air to fill the room and allow others around to smell it. This, therefore, is evidence for the existence of molecules.
2: One situation would be everything we know about the planets or anything else involved with outer space. Also, we know things about the ocean floor that we can't see.
3: Yes,I think all gases have weight. If gases are made up of any particles, they must have weight. For instance, in lab, when we blew up the balloons and dipped them in liquid nitrogen, we could see the liquid that collected at the bottom that showed us the air we blew in had weight. We then continued to figure out the size of an atom. Through this process, we were able to see rather than assume that gases had weight.
4: I learned how cornstarch reacts when mixed with water. This taught me that this mixture was "non-neutonian" which involves fine particles that don't mix with water, but rather suspend in water. I learned that this is how quicksand works.
5: What makes grass green?

lecture preflight 02
1: Smelling soup cook is evidence of the exsitence of molecules because the molecules in the air that smell like the soup diffuse across the room, showing that the smell of the soup has to exsist as molecules because they are able to move across the room.
2: We learn about the planets in the solar system and those we can't see without the aid of a telescope. We learn about wind and wind patterns and we can't see the wind we can only feel it. We learn about sound waves.
3: I do think gases have weight. An example of this would be when you blow up a balloon with air. You can see that the air takes up space which suggests that it also has weight.
4: How to predict the size of an atom.
5: How do fish sleep?

lecture preflight 02
1: I think smelling soup might be thought of as evidence for the existence of molecules because your nose is not in the soup but above it. The molecules of the soup move around in the air above, disperse all around and that is how you smell the soup. Therefore, since your nose is in the air above the actual liquid soup, you are still able to smell the soup because of molecules.
2: I do not think we can see the bottom of the deep ocean floor but we still know a lot about it through observations of what we can see in the ocean, by measuring the distance and temperature as far down as we can go, and by using technology to understand the bottom of the deep ocean floor as best we can. Another situation where we learn about things we can not see is
3: I think all gases have some weight even if it they are virtually zero, so very, very small. I think one possible experiment is get a sealed off room, and weight a box open. Then cover the box, tightly sealed, except it will have a valve where you can put gas into but nothing can come out. Then, pump gas into the box, and then weight the box again and it should weight a little more, of course measuring on a scale that can measure to very, very small numbers. A more down simple example is to tie a balloon that is not blown up and weight it. Then blow the balloon up and tie it and weight that and I believe it should have gained some weight which is because of the gas inside of it.
4: I learned a few great experiments to do in a classroom when teaching about atoms and the states of matter. The perfume experiment and the balloon experiment both show about atoms and states of matter and are simple enough to do with children. The experiment that was my favorite was the mystery box which is a great activity to do at the beginning of the year in science class, because it not only talks about states of matter but can be used to talk about how to scientists learn about things they can not see. Another experiment to do with this is put different objects in small film cans and pass them around the students need to guess what is inside of them from using other senses other than their sight.
5: How deep is the deepest part of the ocean?

lecture preflight 02
1: Because molecules diffuse through space
2: a car's horn
3: yes all gasses have weight a helium baloon is lighter than the air surrounding it thats why it floats but we can see that all gases do have weight because the regular baloons do not float
4: corn starch
5: why are swimming pools reflected as blue even though the water is clear?

lecture preflight 02
1: Since the fumes are gases, just like the perfume experiment, gases disperse into the air and spread to all of the available areas in a certain room. The fumes from the soup, therefore, spread from the pot and fill up the kitchen with wonderful smells. Hence why we can conclude that smelling soup cooking is evidence that molecule exist.
2: Gravity is all around us and although we can't physically see the force that keeps everything in place, we can learn about it from astronaunts since they can stay in the air when they are on the moon.
3: Since all gases are made up of atoms and all atoms have molecular weight, I believe that all gases have weight. An example could be filing up a balloon with air and then weighing it. It may not be much, but it does have a weight value to it.
4: That when you put hollow items into liquid nitrogen, leave them sit in the pot for awhile, and then take them out; once you throw them against a wall, they shatter! A little scary at first, but it was definitely cool.
5: what's below the ocean's ground?

lecture preflight 02
1: Something in the air needs to carry the smell to your nose from the soup.
2: We have learned things about outer space, even though we cannot see the planet itself. Another example would be the bottom of the ocean.
3: I think gases also have weight, but it is so little that when we talk about heavier things, gases are insignificant. An example would be when two gases seperate.
4: I learned about a solid with water premeating in it. I thought the corn starch and water was very interesting.
5: Was it the corn starch and water trick that kept the sword in the stone for so long? Where does one discover liquid nitrogen?

lecture preflight 02
1: Because air molecules diffuse throughout the room.
2: Measuring the speed of light.
3: Yes, gases have weight. For example a helium ballon rises because it is lighter than air.
4: That you can estimate how many molecules are in a ballon by putting it into liquid nitrogen.
5: How did the liquid nitrogen form a liquid inside the ballon?

lecture preflight 02
1: Because even in order for a scent to travel throughout a space molecules have to exist in which the scent takes form of that molecule. (Trades places with an air molecule)
2: I think of birthdays or Christmas when getting presents that you're not allowed to open until later. Most would be tempted to shake them a bit to guess whats inside.
3: All gases do have weight, its just that their molecules aren't very compressed. If you were to compress all the gas molecules in an area they would end up having at least a little bit of weight. One example that I could think of is air being compressed in an oxygen tank for a scuba diver.
4: The experiment with the cornstartch and the water. It was by far my favorite part of the lab and I'd be lying if I didnt say that I came home and showed my roommate.
5: Why is it that snow trucks fill the streets with salt to make snow melt? What is it about the salt that makes the snow melt?

lecture preflight 02
1: One can say that molecules do exist simply because individuals are able to smell the soup. Molecules keep their chemical properties therefore when the soup is smelled molecules are indeed present.
2: We all learn about the wind and the force that it carries although it can not be easily seen. This is also evident in germs and bacteria, we know that they are harmful and should be avoided but they are not easily seen by the human eye.
3: Yes, I believe that gases do carry weight. I don t beleive that their weight is significant in number however I do beleive that do vary; such as the weight of carbon dioxide is different than that of air they have different particles and molecules in them.
4: I learned that liquid molecules are compacted as tightly together as those of solid molecules. I always believed that the liquid molecules had space between them however in reality they do not.
5: Does light have weight? Does light make sound?

lecture preflight 02
1: When you start to cook the soup, diffusion will cause the "smell molecules" to circulate all throughout the room. So, when you smell the soup, you are sniffing in those molecules.
2: When listening to music, you feel vibrations and groove to rhythms. Without realizing it, you could be learning about how music is made through various sound vibrations.
3: Gases do not have weight. If you try to measure oxygen on a scale, it won't work.
4: The size of an atom is about 5 angstroms.
5: How does microwave oatmeal work? Or any oatmeal, for that matter... I thought about this after the cornstarch experiment in lab this week. Oatmeal gets that same gooey quality but it depends on heat as well.

lecture preflight 02
1: The soup is made up of molecules. Some of these molecules reach your nose and cause you to smell the soup. If things were not made up of molecules, there would not be an explanation for why the smell reaches our nose.
2: The effect that medicine has in the body. Another example would be wind. We can see the effects that wind has, but we cannot actually see the wind.
3: I think that gases do not have a measureable weight. I do not know how one would go about testing a gas for it's weight. I know that molecules have a specific size, but I don't understand how one could ever really measure a weight of a gas.
4: I didn't know that the molecules in solids and liquids are packed in about the same amount of space. I knew that solids have definite shapes, but i didn't realize that it was the ability of the molecule to shift in shape that makes it a liquid.
5: What's the difference between an atom and a molecule.

lecture preflight 02
1: The gas given off from the soup makes a scent in the air. The sense of smell is a way to prove molecule in the air. The gas molecules will spread the smell of the soup.
2: We cannot see sound waves, but we can hear eachother speak. We cannot see the speed of light, yet we use light everyday.
3: I think some gases may have a slight weight due to the make-up of the molecules used to create the gas. The only example I can think of, is when you can see gas exhaust given by a car. The color is very evident and it causes pollution in the air that eventually creates smog, which is easy to see in big cities. Maybe there is a way to capture the gas given off from cars and compare it to the weight of the air.
4: I learned that liquid molecules are packed closer together than I assumed. I liked the explanation that was given about the way they are assorted. They may be packed close together like a solid; however they remain slick enough for solids or atoms to pass through them.
5: How are pictures (photographs) developed?

lecture preflight 02
1: If there is a change in the air, as opposed to the normal smell, then something has obviously changed. If you can smell the soup, then something from the soup must now be in the air...now in your nose...and those would be the molecules.
2: illnesses. We can not see the virus in our body, yet we get sick. Well, under microscopes you can, but the normal eye can not.
3: yes, they all have weight, although sometimes it might seem negative. One negative one that i can think of right away is helium. Instead of gravity pulling something to the ground, helium does the exact opposite and brings it up into the atmosphere. If you do experiments with in a vacume, you would realize that the weight, however small it may be, would be different if there is or is not air.
4:
5: why are the first floor of buildings usually taller than the rest of the floors in a building?

lecture preflight 02
1: When the soup cooks, the heat turns the some of the liquid into a gas molecules.
2: We can't see the wind or maybe learn about the weather.
3: All gases do not have a weight. A physical example might be the air in the tires or measuring the weight of a balloon.
4: The mystery tube activity and thinking about uncertain situations.
5:

lecture preflight 02
1: When soup cooks, some of the molecules from the boiling water are converted from a liquid to a gas, which then spread through the air. It's proof that molecules exist, because you can smell the soup in the air, yet there is still soup in the container (meaning it isn't all just one big blob of soup; there are billions of separate molecules that are able to separate from one another)
2: Models of cells, maps of the world
3: I do think that gases have weight. What you could do to figure it out is get 2 jars; in 1 jar, fill it with nothing more than standard air and put the lid on. In the other jar, fill it with some other type of gas and then put the lid on it. Weigh each of the jars; if there is a considerable difference in their weight, then you know gas does have weight.
4: Not in lab, but in class, I finally know why the sky is blue!
5: How is hail created?

lecture preflight 02
1: Beacuse the smell of soup originates from the kitchen but eventually you smell it throughout the house. In order for this to happen there has to be air ciruclation and atoms that bounce off of each other to slowly spread the smell throught the room or house.
2: Ice freezing.
3: I think that all gasses have weight. It may be less then a solid or a liquid but gasses have weight. I'm not sure if this would be considered volumne but when you blow up a ballon there is space taken up. It has to have some weight. It may be little but there is some there.
4: I thought the Non Newtonian liquid was really cool. I never knew that before.
5: Sometimes when people get cancer and end up losing their hair, it will grow back a different color or type (exp. curly when it was straight). Why is this?

lecture preflight 02
1: The aroma of the soup diffuses through the air. This proves that there are molecules because they move and exchange with air molecules that do not posess the same aroma.
2: Learning about the existance of molecules and atoms even though we can't physically see them. (eg. Rutherford's experiment with gold foil to determine what an atom was like). Situations in daily life would be learning about temperature through touch or feeling the weather outside rather than looking up the weather or using a thermometer.
3: Gases have varying amounts of weight. For example, helium has less weight than nitrogen and oxygen. A physical example of this could be done by filling several balloons with different gases and seeing which ones floated or dropped. This would be best done in a vacuum room where there was no air or in a room that had only one type of gas in it so the balloons would have a similar thing to be compared to.
4: I finally understand the oobleck stuff (corn starch and water) because I know more about the way the cornstarch and water mix and the molecules interact.
5: How does a microwave heat up food?

lecture preflight 02
1: As the soup cooks, molecules will travel as the hot liquid evaporates. These molecules will leave the soup and enter the air. This is how we are able to smell the soup. The molecules that left the soup through evaporation, were smelled with our noses.
2: Gravity- we obviously know it is there because we are not floating aroung, but we cannot see it.
3: Yes, I think gases have weight. They definitely do not weigh a lot, but I think they do have some weight. For example (this is just a guess, I am probably wrong), when you climb a mountain the higher in altitude one reaches, the less oxygen there is to breath. Maybe the oxygen weighs too much to stay at that altitude?
4: I loved creating the cornstarch and water mix. I had never before heard of or seen a non-neutonian liquid. I thought that stuff was so amazing.
5: I heard that if you give a strawberry to a baby before it is three months old, the baby with become alergic to strawberries...is this true?

lecture preflight 02
1: Because smelling the soup from a distance even though it is cooking from a distance demonstrates that molecules shift and equilize with one another so that the smell is distributed throughout the room.
2: Atoms, which are the basic structures of matter cannot be seen by the human eye, however, we know they exist.
3: I think that gases do have weight. A tank of gas like scuba gear weighs a lot, and if gas has no weight, than a tank of gas would be much heavier.
4: I learned about Planks theory when he tested atoms, and that by using gold as a plate he was able to test and prove that the nucleus and thus atoms are at least at some point have a solid.
5: I wanted to know how liquid nitrogen is formed and how it is able to convert things into solid just by touching them. I would like to know how exactly the liquid is formed, produced into a container that is maleable to use in experiments.

lecture preflight 02
1: Without molecules the smell would not travel at all. But because there are molecules, the molecules that contain the smell of the soup cooking can travel across the room.
2: Both sound and light traveling are situations where we learn about things we can't see.
3: Gases do have weight. You can prove this with the fact that a balloon filled with helium floats, and therefore the helium is lighter than the nitrogen rich air we breathe. If you filled a balloon with a different gas it would either float up faster, slower, or sink depending on the weight of the gas. Assuming you always use the same balloon.
4: Liquid nitrogen can freeze a ball and if the ball is thrown against the wall it can shatter.
5: If you dipped a towel into liquid nitrogen and dropped it would it shatter?

lecture preflight 02
1: Smelling soup cooking shows evidence of molecules because as the soup is cooking the molecules are expanding and producing a something that we can smell in the air.
2: A lot of the things that scientists do deal with things that we can't see, for example, the atom.
3: I think that gas can have weight if it is contained. Gases will be lighter than solids though.
4: I learned that solids and liquids are actually packed quite similarly. I always thought that liquid molecules were more spread out, but as it turns out, they are not.
5: How is dry ice formed?

lecture preflight 02
1: This can be explained much like the perfume exercise we did in lab. Smelling soup cooking can be thought of as evidence for the existence of molecules because while the soup is cooking, it is probably evaporating some of its molecules into the air, which trade places with other air molecules to move throughout the air in a room. This diffusion spreads the smell until it reaches various parts of the room and gradually fades away.
2: Learning about sound waves is another situation in which we learn about things we cannot see. We can hear the sound, and perhaps see vibrations of various sounds, but it is difficult to see actual sound. Also, temperature is an example of something we cannot see, because although we can feel that something is hot or cold, we cannot see the molecules moving either fast or slow to create a temperature change.
3: Gasses have different weights as displayed in the periodic table, and also can be seen when filling balloons with different gasses. A balloon filled with just air does not float, but one filled with helium does. To determine weights of various gasses I think that putting them in balloons is a good way to visually see their weights in our atmosphere.
4: I thought that the most interesting activity we did in lab this week was mixing cornstarch and water. The slime-like substance it created was very interesting to observe, and learning that it was a "non eutonian liquid" was very fitting, since the definition involves complicated processes that dont behave as you think it would. This is definitely true of the mixture, as it was fun to stir and poke at with the popsicle stick to see the different reactions. I also liked the reactions that various objects, such as the rubber ball, balloons, and even the floor, had with the liquid nitrogen.
5: Why, in lab, when the hollow rubber ball was thrown against the wall it shattered, but the solid rubber ball when bounced acted more like a pool ball and did not break but was just very hard? I would think that it wouldve at least broken in half since the hollow ball completely shattered.

lecture preflight 02
1: By being able to smell the aroma in the air it is a product of a reaction occuring therefore reacting molecules is the cause of the smell in the air.
2: By using are other senses just as hearing we are able to understand something is occuring, for example thunder. The vibrations of an earthquake is how we understand there occcurance and movement.
3: I believe certain gases have a very small amount of weight. You can test this by measuring a box then putting a gas inside and measuring it again to see if it affected the weight.
4: That starch and water make an unusual liquid that can be hard or soft depending on the amount of pressure put on it.
5: what causes static?

lecture preflight 02
1: The soup itself smells, but if you standing away from the soup, you wouldn't be able to smell it if there weren't molecules. When the molecules are released, they slowly disperse throughout the kitchen, and then the rest of a house.
2: We learn about what is inside the earth and how small systems in our body work.
3: I think that gases have weight. I think that you could weigh a jar with an ice cube (we know that the ice cube has weight) and then heat up the jar (with a lid on) until the ice turns to liquid, then to a gas and is trapped inside. Then it could be weighed again, and I think it would weigh the same.
4: I learned that water molecules are touching, but are flexible, and that's why the shape can change. I also learned that the molecule we measured was 5 x 10E-8.
5: I would really like to see what happens when different things are put into the microwave :).

lecture preflight 02
1: The soup is made up of little tiny molecules, which can move. Because the soup has a smell, the molecules can transfer this smell around the room because molecules move.
2: The effect of medication in the body is one example of things we learn but cannot see. Another example could be the wind. Another one also could be carbon dioxide in the air, which can be harmful.
3: Somehow I do think that gas does have weight. However, I do not know an example. That is a good science question.
4: I learned the approximate size of an atom is 5 and 10 to the -8 centimeters.
5: What is the approximate weight of an atom??

lecture preflight 02
1: there is obviously some substance that is that is floating around and being released so therefore it must be traveling through molecules
2: when we talk about outerspace
3: i think they have some wieght because they can turn into liquids and thus solids, and liquids and solids have weight
4: that cornstarch and water make a trippy substance that one could argue about whether or not its a liquid or solid
5: how come when you are in an airplane at such great heights you can survive but if you were outside of it the pressure would kill you....or would it?

lecture preflight 02
1: Molecules move around and carry the smell throughout the room, that's why you are able to smell the soup. If the molecules did not move the smell around the room then it would stay stationary.
2: Most things relating to biology. Such as the study of proteins, organs, or acquiring traits from parents.
3: I think gas does have weight. I'm not sure how this relates, but when I blow a balloon up with oxygen it doesn't rise, but helium does cause it to rise. I imagine that this has something to do with the density of the gases.
4: I learned how to make approximations to determine the approximate size of an atom.
5: Does liquid nitrogen burn skin or does it freeze it?

lecture preflight 02
1: You smell soup cooking because its molecules are spreading throughout the air. The soup molecules slpwly disperse throughout the room.
2: When studying the parts of atoms, they can not actually see them, so they must use other methods to do observations. They use scientific theories and prior knowledge to determine the properties of atoms.
3: Yes, all gasses have weight. You can determine the weight of a gas by filling a balloon with the gas, weighing it, and subtracting the weight of an empty balloon.
4: In the lab on cornstarch we leared that when water and cornstarch are mixed together, they form a non-neutonian liquid which has qualities of both a solid and a liquid.
5: How exacty does salt melt snow?

lecture preflight 02
1: Air is made of molecules and the soup is clearly made of molecules. Thus when the soup is being cooked, some of the solid molecules are transformed into gas vapor, thus the smell diffuses throughout the room.
2: The force of gravity is a tricky concept to master because of the inability to actually view and concretely understand the incredible force of nature!
3: All gases have weight due to the example today in class. We filled the balloon with gas and then stuck it into liquid nitrogen to then be transformed into liquid; a measurable weight.
4: I really enjoyed learning that cornstarch and water was not a "normal liquid." There is a layer of water present between the molecules that makes it unique. I really enjoy making pies and my own pie filling, so it was nice to actually view cornstarch in a different light. I am excited to share my findings with my future students!
5: Last Summer, I went to Sanibel Island for a couple of weeks. One night, I was out walking on the beach, and the water was playing weird tricks. It looked and felt like I was walking on top of water. Why was that?

lecture preflight 02
1: As the soup is cooking, atoms and molecules diffuse througout the air and sends an aroma. The aroma is made up of travelling atoms.
2: In medical research. I don't think we know exactly what a human body cell looks like.
3: Yes, all gases have weight. Every gas on the periodic table of elements weigh something. Helium in a balloon would weigh something.
4: The concept of cornstarch and water has been applied to cool things like making bullet-proof vests.
5: When people make vases and they blow air into the glass, how exactly does that work?

lecture preflight 02
1: Because the molecules travel through the air to reach your nose so you can smell it.
2: When we study religion and God as well as the past. We cant see the past what we can learn about it.
3: I think that gases have weight. If you put different gases into a container you can see if one container weights more than the other (the two containers have to be the EXACT same).
4: That something doesnt necessarily have to be a liquid, solid, OR a gas. It can be a mixture of both like we saw in the corn starch mixture.
5: why can you pack some types of snow but not others?

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1: Since we can't smell (or get too used to the smell of) everyday air, smelling soup would prove that gas molecules do exist even if you can't see them.
2: We can't see air but we can prove its existence by feel when the wind blows.
3: All gases do have weight. For example, if a deflated balloon is weighted, it would weight less than if it was weighted inflated with carbon dioxide.
4: It was very interesting how the corn starch and water mixture had both properties of liquid and solid. When I moved the Popsicle stick or finger fast enough, the mixture turned solid but when left untouched or slowly stirred, it was liquid.
5: why does the rechargeable battery drain faster when it's left in the cold?

lecture preflight 02
1: Smelling soup cooking can be thought of as evidence for the existence of molecules because as some of the water in the soup boils and is released into the air, it carries the smell of the soup with it on its gas molecules. As the gas molecules travel across the room, you will be able to smell the soup from further and further distances until the smell fills up the room, if not the entire house.
2: We can learn about things we can't see by watching how they react with something that we can see. For example, you can see a black hole by observing its effects on the light around it.
3: Yes, gasses have weight. If you take two different colored gasses and put them in a tank. The heavier gas would sink to the bottom and the lighter gas would float to the top. You would be able to see the gasses because they are colored and you would be able to observe the two of them together in the tank.
4: I never knew that you could make such a strange substance from cornstarch and water. I also never knew that there were strange liquids that were almost solids. It was fun to play with, but very frustrating because it never acted like you would expect it to. I thought it was going to feel gooey based on how it felt and looked like and I was surprised.
5: Which came first? The chicken or the egg?

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1: Even though your nose isn't touching the soup, you can smell it. Meaning that as the water is boiling, evaporating liquid particles bring the flavor of the soup into the air, where the smell spreads out.
2: Radio waves, sound waves, the inner core of the Earth, atoms, the inside of the body (MRI), etc.
3: An easy way to show that air has weight is to fill a ballon with pure helium and watch it rise. The helium balloon is lighter (less dense) than the air around, so gravity pulls the surrounding air down much faster than the balloon. The helium gas may feel like it has no weight, but go to a balloon store and feel the big empty helium tanks, one full, one empty. This will show that when compressed very densely, even helium has weight.
4: CORN STARCH is cool. and the existence of liquid body armor. i might just have to design some from plain corn starch.
5: How are really big sink holes (from earthquakes) filled?

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1: although the soup is a liquid and contained in a container, the scent attaches to air molecules as then beings to fill the room.
2: the smell of gasoline, hearing a train coming down the tracks, tasting saltiness or sweetness
3: not all gases have weight.. because some evaporate into the air
4: that you can pour liquid nitrogen on your hand (only for a split second) and it won't freeze you because there is a layer of air between your hand and the liquid nitrogen
5:

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1: Although we cannot see molecules, smelling allows us to know that they are there because we know that in order to smell the soup, its molecules have to be floating in the air. The soup's molecules float around in the air and we inhale them, getting a scent.
2: Learning about atoms--we cannot see them.
3: I believe that gases do have weight.
4: I learned that starch is not a solid nor a liquid when added to water--it's a non-newtonian.
5: How does wind work?

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1: When a bowl of soup is hot, steam rises from the bowl. A person can smell the soup as the steam diffuses through the room. This shows that there is an existence of molecules in smelling soup cooking. It is kind of like the experiment that we did in lab with the perfume.
2: Other situations can be like spraying perfume or something like Febreeze throughout a room. Everytime something is baked in the microwave or the oven, not only like the cooking soup, the smell diffuses throughout the room. The particles can't be seen, but they can be smelled. We also learn about evolution and we can't see that.
3: Yes, I think all gases have weight because gases are made up of molecules and we figured out in lab that all molecules have a weight. A physical example you could use would be what we did in the lab with the syringe. We measured the amount of air in the syringe and this can be used to find the weight.
4: I thought the lab with the balloons was really interesting. I had no idea that you could measure the mass of a molecule by doing something as simple as that. Plus, I really enjoyed putting the blown up balloon in the liquid nitrogen.
5: Why do a person's fingers feel tingly when he or she walks into a room after they have been in the cold for a long time?

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1: the same as the purfume example. As the soup heats up water vapors from the soup rise and they diffuse the same way as the purfume, at first you can only smell the soup around the stove, then it gradually switches places with non-soup vapor molecules and spreads throughout the kitchen and then more of the house.
2: If you put a bucket of hot water into a room that is colder then it the bucket of water will eventually cool down and the temperature of the room will slighly heat up. We learn by or sense of touch in this situation.
3: Gasses do have weight. An easy example of this is that hot air rises. when air gets hot the molecules seperate and make it lighter, therefor it rised. A balloon has helium in it and it floats because it is lighter then oxygen
4: I learned about non-Newtonian fluid like cornstarch and water. Our instructor said that bullet-proof vests can be made out of it.
5: How do light-up shoes work?

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1: The molecules released in the form of stem penetrate our nostrils. Those molecules go into us and send a signal to our brain that the soup is cooking.
2: While we can see someone talking or singing, we aren't able to see how the vocal cords are working. We can learn how they do, but we don't we see them working as we are watching someone else speak.
3: I'm sure that there are some gases that have weight, but it's very hard to determine any physical, since one of the only ways we are to able to contain gas is by the shape it is in. You most likely have to change its state.
4: I learned how other students have their own ways of making solid estimates in all types of situations.
5: How do you throw a curveball?

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1: Smelling soup cooking may be thought as evidence for the existence of molecules because the molecules would be the ones spreading which allows for the scent to spread as well.
2: We constantly learn about things tat we can not see, especially like subjects such as history. When talking about things that occured in the past we can not see them. We can only try to imagine what the events looked like.
3: I believe gases do have weight. When inflating a ballon it expands. One thing that can be done is weigh a balloon before it has any gas in it. Then weigh it after the gas is put into it and subtract the two. It will probably be a very small difference but i think there will still be a differnce.
4: I thought it was so interesting how the cornstarch and water react together and create a liquid/solid. It was just so weird to see it look hard but once you put the stick in it, you were able to have some liquid come out. Extremely amazing!!!
5: How did they come up with the term "moles" in chemestry?

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1: Smelling soup cooking can be considered evidence of the existence of molecules because even though you can't see the soup molecules in the air but your sense of smell is still triggered becuase the molecules are present.
2: When you drop a ball you know that gravity exists because the ball falls.
3: I think some if not all gases have weight becuase if you fill a balloon by blowing air and CO2 into it, the balloon does not float or raise but if you fill up a balloon with helium, it raises in the air and floats. This shows that the gas helium is lighter than air.
4: I learned that corn starch and water mixed together makes a substance that is a non-eutonion liquid, which has very interesting properties.
5: How many gallons of water are in the ocean?

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1: If a room has no definate smell and someone starts to cook soup in an open kitchen, the smell of the cooking soup spreads throughout the entire house. This would prove that the smell is moving from molecule to molecule.
2: Space, air (wind), God, history
3: All gases have weight. However, not all of them are heavy enough to be pulled down by gravity.
4: Liquid has the same number of molecules that solids do and can be drawn the same in a model.
5: What makes some snow like powder and other snow "snowman making snow"?

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1: The scent has to be contained in something. The steam from the soup is a gas which can carry the small of the soup throughout a large area.
2: Gravity. If something falls to the ground, we can't literally see that force that is acting on it but we know for certain that a force exists.
3: Gases have the ability to cause pressure which I supposed could be considered the same thing. If you blow up a balloon, the pressure that exists inside the balloon takes up space and is pressurized.
4: The steps outside are increadibly slick. (I almost had a very embarassing fall).
5: If you are swimming in an indoor pool (where the temperature is relatively cool) and the weather outside is also VERY cold why does steam seem to rise out of the water?

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1: We smell because the molecules are vibrating through our noses, so by smelling something new, it means there are different molecules running through the air.
2: When we study cells of plants or animals.
3: Gases have to have some weight in order to explain why smoke rises above oxygen.
4: That liquids actually have the same molecule representation as solids in that they can't condense when pressure is put on them. I always thought that when you draw liquid molecules, they should be slightly more spread out than solids.
5: Why does glass feel so much like a solid if its particles are moving like a liquid?

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1: The molecules travel through the room where the soup is cooking. The more the molecules spread across the room, the more people can smell the soup.
2: One situation would be getting a tan from the sun and how that happens over time. Another situation would be how certain music affects certain people.
3: Maybe an example of gases having weight is a balloon. A balloon on a string floats for a couple of days, but left on it's own it slowly sinks to the floor, and it is filled with gas.
4: I didn't know there was a mix between a liquid and solid. However, I was proved wrong because the cornstarch and water mix was really neither solid nor liquid.
5: What is a good way to explain to students gravity on earth compared to gravity on the moon?

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1: The soup may be cooking in one area of the kitchen, and as it cooks the smell will diffuse throughout the room as the molecules spread out (disperse). This can be seen as evidence for the existence of molecules because the air particles are switching places with the soup smell particles, thereby creating a smell of soup throughout the room after a certain period of time elapses.
2: When you hear music coming from a source that you cannot necessarily see is one example of a situation in which we learn about things that we can't see. Although we don't necessarily know where the music is coming from, we can still hear its tune, volume, and pitch and we can still learn information about it, such as its artist or title.
3: I think that all gases have some weight.For example, carbon dioxide gas (CO2) is heavier than air. If CO2 is put in a cup, it sink to the bottom and take the shape of the cup. After a while, some of it will mix in with the air,becoming part of a solution with the air. Also, in one of the experiments that we did in lab, the balloon that had air in it still weighed something(although significantly less than the balloons with the rubber ball and water).
4: One interesting thing that I learned in lab today was how Rutherford's gold foil experiment paved the way to discoveries about the nucleus being the central part of an atom.
5: How does the salt used during a snowstorm melt ice?

lecture preflight 02
1: The ability to smell soup is made possible by the presence of very small soup particles in the air, which bind to cilia in your nose and is registered by the brain as the smelling sensation. Without molecules, (the bowl of soup being made up of numerous volatile soup molecules instead of being just a single entity) this theory of smell would not make sense.
2: We can't see microwaves, but we can observe their effects.
3: yes all gases have weight. Weigh an empty balloon vs. a balloon full of air.
4: the size of an atom. approximately 1-10 angstroms
5: Is dry air or wet air colder?

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1: The molecules spread across the room creating an aroma.
2: We learn about attraction, between negative and positive forces. We also learn about love.
3: I think that gases do have weight. For example, I think that the gas you put into you car has a weight.
4: I learned that corn starch and water creates a liquid and a solid, called a Non-Newtonian Liquid.
5: How many gallons of water does the ocean have?

lecture preflight 02
1: At first you can only smell the soup when you are close to the pot. However, after a certain amount of time you can smell the soup throughout the room. This means that there has to be molecules floating and diffusing through the room in order to smell it.
2: When we study chemical reactions or magnetic fields.
3: I think that gases have weight. When you fill up a balloon with hydrogen it floats because it weighs less than the air.
4: corn starch mixed with water is awesome!
5: how much does a proton weight?

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1: since you can smell it, and not necessarily see it, you know it exists. the scent of the soup is in the room which makes one know that the soup does exist.
2: When i think about learning of the existance of things i cant see, the first thing that comes to my mind if wind. We learn about it, such as what it is, how it works, its importance, ect- yet we cant see it. Of course there are lots of situations we learn about that we cant see when science is involved- ie atoms (which are realted to molecules).
3: i think that gases do have weight- for example the only thing that comes to my mind are chip bags. the bag seems to be full but isnt- really the bag is only half full and the other half is filled up with air/gas. That makes me think that when weighed the gas as some impact on the weight and if all the gas were to be removed then maybe it will weigh less.
4: My favorite part of lab was seeing how everyone used differet instruments to measure Pooh Bear. It was fun seeing the creativity.
5: i know that light is the fastest thing in the world, what comes up second or third?

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1: Let's say we are cooking chicken noodle soup. Before any ingredients are touched, the kitchen will have its typical smell. However once we start to cut the ingredients and place them in the pot, we begin to smell a distinct chicken noodle soup smell. This is because the molecules are binding together giving us that 'soup' smell. That smell only comes to us because of the odor or 'gas' that the cooking is releasing. Hence, from the smell, we know that there are molecules in the air.
2: One situation would be a gas leak in the kitchen. We can't see it, but we identify it with the smell. Or the smell of a ciagrette burning from another room. Sometimes you are at restaurant and smell the tabacco from a ciagrette without actually seeing who is smoking it.
3: Gases definately have weight. Even though a gas may not be readily seen as a solid, they still contain molecules which means that they still do weigh something. To prove this you could take two test tubes one filled with oxygen and one without any gas at all. They may look clear, however the one with oxygen will weigh more.
4: The most interesting thing I learned in lab this week was estimating the weight of an atom. It was fun to see how we could do that from a simple experiment.
5: With the recent snow fall. I was wondering why some snow fall is fluffy where you can't make any snowballs, but then why at other times some snowfall is the kind where you can make tighter snowballs?

lecture preflight 02
1: The smell atoms attach to oxygen molecules which then travel throughout the room. Smelling soup is evidence because it starts off being concentrated in a specific area but not too long after the smell spreads to fill the room.
2: When we learn about biology and cells, we learn about things we can't see. We can't necessarily see nuclei or cells but we still study them.
3: I think gases do have weight; I think molecules have weight. An example is oxygen. If you compare an empty O2 cylinder to a full one, their masses are different.
4: Corn starch is coool!!!!
5: How does medicine make you feel better?

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1: Because there are all these gas molecules that make up the smell of soup and so if you can smell these molecules than there is evidence that these molecules exist
2: The molecules that make up the air. We breathe it, but we cant see it.
3: Yes, gases have weight as well because they are also made of one of the elements from the periodic table. Water when turned to the gas phase still weighs the same despite of being a gas.
4: I was unable to attend lab this week so I can't really answer this.
5: Why is the sky blue?

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1: When the soup is heated, some of the soup mix and water become gas. The gas will then spread throughout the room; this is what we would smell. The fact that we would be able to smell something would mean that something new has entered the air in the room - molecules in the vapor coming from the cooking soup.
2: Rays of light?
3: I think that if weighed on a very sensitive scale, one would find that some gases weigh more than others. To find this, one would weigh an empty bottle. Next the bottle would be filled with a gas and then weighed again. This could be done with multiple gases to see if there is any weight difference in gases.
4: 100 years ago, people would stick their feet inside of x-ray machines to see if their shoe was a good fit.
5: What would happen if I were driving at the speed of light and then turned my headlights on?

lecture preflight 02
1: Although we cannot see the gas the soup is giving off we know it is there because of the smell. Most gases do have some sort of smell to alert a person of what type of gas it is and if it might be harmful to go near. By smelling the soup we know that there is an existence of molecules because we know that there are air particles and when we smell a gas we know that there has been a diffusion between the air molecules and the gas from the soup.
2: Any sort of religious beliefs a person may learn about are things that they cannot see. No one has clear proof that heaven or hell exist, or that there is one true God, however, many people who learn about certain beliefs choose to trust these thoughts.
3: Although gases weight very little, almost nothing, they still weigh something. Proof of this would be the air in a balloon. Although the balloon feels very light it still takes up space and thus has weight.
4: I thought the experiment with the corn starch and water was really cool. I learned how the pressure of one's finger or the popsicle stick made a difference in the way the molecules arranged themselves in the cup. When pushing hard into the mixture, the corn starch molecules tightened up and moved together making it very hard for me to put my finger in. It caused the mixture to form a solid. However, when I put my finger in slowly, I found that it was much easier because the molecules were relaxed and the water molcules mixed with the corn starch.
5: How many gallons of salt water are in the ocean?

lecture preflight 02
1: Smelling soup cooking might be thought of as evidence for the existence of molecules because over time the molecules begin to spread out, and that's why you are able to smell the soup at farther and farther distances the longer you wait. This is similar to the perfume example that was done in class today. The molecules began to spread out first to the front of the class, and after a few minutes, the back of the class could also smell the perfume. This occurs because of air circulation.
2: Some other situations where we learn about things we can't see is if helium is inside a balloon and makes it rise into the air. We know that helium is inside, but we cannot actually see it. Another example is with rain and snow. There is a process that causes this to happen, and it goes through an entire cycle, but we cannot actually see things such as evaporation occuring.
3: I do not think that most gases have weight because there are tons of gases in the air that people live in every day. There might be a gas that weighs something but I cannot think of any physical example to prove that they do.
4: I learned that it is harder to push the water located in a syringe or something else than it is to push out air. I would have assumed that the air would have been harder to push, but I learned that it is pretty much impossible to push the water out if you are putting pressure on the thing that it is located in such as the syringe.
5: Why does firewood make a popping noise when it burns?

lecture preflight 02
1: I think that smelling soup cooking is evidence for the existince of molecules because particles of the soup are mixing with the atoms in the air to make the scent of the soup travel through the air. It starts out in a small general area above the soup pot, and then it slowly flows with the air to move around the room. By the scent moving, it proves theres molecules because the molecules are moving in the air to create the scent to spread.
2: We learn about the different environment on the different planets in our solar system, however, we cannot see them. We learn about god, but don't see him.
3: I'm not sure if gases have a weight or not, but if they do, I do not think that it is very heavy. One reason I think that gases do have weight is because when you fill up a balloon there is a difference in weight than if it is not filled.
4: In lab today I learned about non-neutonian liquids when examining the cornstarch and water mixture. I never had heard of this liquid before, and I never knew anythin that could be both a solid and a liquid at the same time. I think that this is really amazing and I am definetly going to use it in my classroom when I become a teacher!!
5: What causes static?

lecture preflight 02
1: molecules from the soup drift in the air to a person's nose. otherwise, all of the soup would supposedly stay in the pot.
2: learning about the solar system, human anatomy, and all of the different types of cells in biology
3: all gases have weight because all gases have mass. even one molecule of a gas weighs some amount. a person could measure an uninflated balloon and then fill it with a gas and take the weight.
4: i learned from the starch demonstration that all material does not have to be classified as solely a solid, liquid, or gas.
5: why can you not break a diatomic molecule like H2 into atoms?

lecture preflight 02
1: In order to smell the soup, the molecules must enter your nostrils and catalyze smell.
2: A situation in which we learn about things we can't see is during the study of atoms. Atoms are not visible due to their size, and we also attempt to dissect atoms into smaller parts, which are not visible as well.
3: All gases have weight. An example of this would be nitrogen tanks used during scuba diving.
4: I learned that mixing cornstarch and water together forms one cool concoction. I also learned that liquid molecules are packed closely together and not much farther apart than solids, as I had always believed.
5: How do airplanes stay in the sky?

lecture preflight 02
1: Smelling soup cooking is like watching ice melt or watching dye disperse in water. The scent of the soup and the molecules that make up the soup are "floating" through the air.
2: Sound and wind.
3: Yes gases have weight. The liquid nitrogen and the balloons proves this because you can make the gas inside the balloon into a weighable liquid; therefore, when compressed, or changed into another state of matter, it can be weighed.
4: The cornstarch and water was amazing! I learned that it is a Non-Newtonian liquid and I had never heard that term before.
5: Why does liquid nitrogen bubble like it's boiling when it's so cold?

lecture preflight 02
1: The soup can be smelled because the smelly molecules are released in the air and the air is made up of molecules that are moving around. THe smell moves around like the other molecules and diffuses about the room. Because the molecules carrying the scent are diffused around the room we are able to smell it.
2: Scientist study the planets and other galaxies that they are not able to see.
3: Yes, gases have weight. You could weigh a balloon and then fill it up with air and weight it again to see if the weight has changed.
4: I learned that the molecules in liquids are just as close as the molecules in a solid. THe difference is the structure of the molecules.
5: Why is water bigger when you freeze it?

lecture preflight 02
1: The soup is made up of molecules and some of the molecules spread around the area/room, which in turn allows you to smell it.
2: -the affects of medicine in the body -affects of wind (you cant see it but you can see it's affects on tree and people etc) -process of breathing
3: I dont think there's a way to measure any gases weight..I dont think theres a tool that can be used.
4: -liquid and solid molecules are actually similarly packed together, but solids are "stuck" together whereas liquid molecules move around more.
5: why can you feel the bass from a speaker

lecture preflight 02
1: The smell of the soup is the air molecules moving around and so when they spread out to wherever you are, you smell them.
2: When we learn about the planets and solar system-they are so big that we can't see them.
3: I think that they have weight, it is just very, very light.
4: I had no idea that it could be that easy to figure out how big an atom was. I thought it would be a much harder process than it actually was.
5: The power in my room died a few days ago, so I was wondering-what is the maximum amount of volts a circuit can handle before the fuse will blow?

lecture preflight 02
1: Well molecules are small particles that make up solids, liquids, and gases. The soup is liquid and when it is cooking, the liquid gives of vapor which is a gas that permeates to your nose causing you to smell the soup. Therefore, you know there are molecules since they have turned from liquid to gas, and are less compact when they reach your nose.
2: When one looks at the rainbow, one can't see the light wavelengths, but they do exist.
3: Yes, i think all gases have weight. Since gas is matter and all matter has weight, then all gases have weight. For example, the air we breathe has weight since it's composed or oxygen and nitrogen gases mostly, each which has a mass of their own.
4: I learned that liquid nitrogen causes the air in a balloon to decrease. The balloon deflates and turns the gas inside into liquid due to the temperature of the liquid nitrogen.
5: Why does an atom when reflected on a flat surface shoot out at the same angle?

lecture preflight 02
1: This would mean that gas molecules exist because the smell is diffused with these molecules and it's travelling.
2: When we evaporate water, it turns into vapor, its gaseous form. We cannot see water vapor but if we were to collect it, we can notice its condensed form of water.
3: Yes, gases also have weight. You can blow up a balloon and weigh it on a micro scale and notice that it weighs more than just a plain balloon on a scale.
4: I thought it was very interesting to see the balloon shrink when it was put in liquid nitrogen. The air turned into water and then the balloon blew up again when it was returned to room temperature and the water then disappeared.
5: From the lab, I did not understand the corn starch experiment. Why was the solid corn-starch turning into liquid if you put it on your finger?

lecture preflight 02
1: Smelling soup cooking might be thought of as evidence for the existence of molecules because they are changing into a gas and the smell fills the air, which is what you smell.
2: When doing the PVC tube lab, that was experimenting with objects that we cannot see. We were forced to figure out how exactly the strings worked without actually seeing what was inside.
3: Everything has a weight, but the weight of a gas can be very small. A physical example that can be used is that when using a scale measuring a very small weight, the weight of the air may cause some error.
4: I learned that the atoms in a liquid are about as close together as the atoms in a solid. I originally thought that the atoms in a liquid were a little further apart.
5: How are fruits such as watermelon bred to be seedless?

lecture preflight 02
1: This is similar to the perfume example we did in class. We smell the molecules in the air. They start in one spot, like the soup starts in the spot where its cooking in the pot then the molecules rise in the air and permeate through the room allowing us to smell.
2: Sound, temperature,
3: Gases have weight but I believe it depends on the type of gas. That is why we have the periodic table. For example if you blow up a balloon with air it will sink when thrown up in the air, but if its filled with helium it will keep rising up.
4: The effects of putting corn starch in water and what happens. It was really cool to see the characteristics of the mixture. At some points it acted like a solid and other times a liquid.
5: How does nitrogen turn rubber balls so hard that they shatter when thrown against the wall and then take the properties of rubber again?

lecture preflight 02
1: All the molecules in the soup have the same smell, and when it is cooking some of them turn to gas which then goes into your nose. If you smell it, some of the molecules must be entering your nose.
2: Gravity Sound Wind
3: Yes, they weigh very little though. Using an extremely sensitive scale, you could fill many balloons up with different gases and then weigh them all, and also weigh an empty balloon. If they all weigh the different, gas has weight.
4: I was not in lab because I had a fever. I hope to be able to make it up if possile
5: Why does it have to be so cold here?

lecture preflight 02
1: Cooking soup gives off an aroma that is trapped instead millions of air molecules. The smell disperses through out the room by switching places with other air particules in the room. These are the things that fill up a room and cause it to smell like cookes soup.
2: In some situations you can observe the effects of sound waves by seeing how things vibrate because of the bass of music or how high pitched sounds can break glass. Even though we can't see sounds waves, we can learn about them through special techniques.
3: I believe gases do have a weight. I watched a show once where two scientists filled one football with air as usual and another football with helium to see if one would go farther than the other when kicked. Although the final results were not that different, they did find that the helium ball weighed slightly less than the football filled with a different gas.
4: When you add enough corn starch to water, it becomes some form of a liquid/solid.
5: Why do high pitched sounds break glass?

lecture preflight 02
1: Smelling soup cooking might be thought of as evidence for the existence of molecules because the molecules that are produced by the soup give it a smell. This smell starts off where the soup is made. These soup molecules then spread throughout the kitchen by replacing air molecules with soup molecules. This replacement of air molecules with soup molecules will eventually cause the entire house/room to smell of the soup. This shows the diffusion of molecules moving throughout the air.
2: One situation we learn about things we cannot see is evaporation. Evaporation helps to dry our surface and this is a process that we cannot see. We do not see moisture from the surface rise and dry the surface. Another situation I can think of is photosynthesis of plants. We learn that plants get their nutrients and energy from the sun by absorbing the sun. We cannot see the actual process of the sun getting absorbed and storing it into energy. We studied the plant to see the sun's impact.
3: I think that gases have weight because of gravity. On earth gravity causes us to be pulled onto the Earth, where as on the moon where there is no gravity, you can float. Therefore, I think that gravity has affect on our air and its weight. It causes us to have weight on earth.
4: I learned that the molecules in solids are organized and tightly compacted. In liquids, they are a little less organized and less compacted and fewer molecules, and in gases they are spaced out and there are fewer.
5: What goes on in shampoos that cause them to make hair shiny?

lecture preflight 02
1: Smelling soup cooking might be thought of as evidence for the existence of molecules because if there were no molecules, no one would be able to smell since you need molecules to travel to your nose in order to be able to sense any type of smell.
2: Other situations where we learn about things we can't see are: atoms, chemical gases, air pressure, and wind.
3: Yes, gases also have a weight for example when we experiment with actual chemistry activities we are required to know the mass of each mass. One example could be to measure the amount of air in a balloon.
4: One intresting thing that I learned in lab this week is that the space between the liquid and the solid atoms is the same. I always thought that the liquid were further apart so that was very helpful to learn.
5: Well, since we were talking about atoms in lab today I was wondering how different the composition of a chewy cookie and a regular crunchy cookie would be. Is there a difference in the atom compoisiton because one is softer than the other?

lecture preflight 02
1: Because since you can't see the actual molecules, smell is evidence that they exist. This is the same as the perfume experiment done in lab; we could not see the perfume but we knew it existed because we could smell it.
2: Wind (you can't see it but you can feel it and you can see how it affects the environment), and a lot of harmful gases (you can't see it but you know it exists if it harms someone).
3: Yes, gases have weight. You can find this out by filling a balloon with air (or helium). But before you do that, weight the balloon without any gas in it. Then, weight the balloon with the gas in it and subtract the weight of the empty balloon. The difference is the weight of the gas.
4: It is possible for something to be neither a liquid or a gas (the cornstarch and water experiment). Also, I thought it was really interesting how easy it was to estimate the size of an atom.
5: How does a tv work? As in, how do you see the picture you do on the tv?

lecture preflight 02
1: Molecules are everywhere, but in this situation there is a smell attached to them.
2: parasites, small organisms, emotions, and temperatures.
3: yeah gases have weight. Like when you can see that something is rising or falling. steam, air freshener.
4: how to put ball in balloon!
5: why does sweat sometimes smell and other times it doesn't?

lecture preflight 02
1: Although the soup is cooking in the pan, the air is circulating the molecules to your nose; thus you can smell the molecules.
2: You cannnot see sound; however, you can hear and learn that sound travels. Also, you cannot see perfume but you can smell it.
3: I think gases have weight because an empty ballon weights less than a balloon filled with air. Also, gases have pressure. In the syringe experiment in class, the syringe filled with gas had pressure; thus, it also has weight.
4: I learned that solid and liquid atoms are both tightly compacted. However, solid atoms are very orderly while liquid atoms have no order.
5: What is a mol?

lecture preflight 02
1: Smelling soup can be thought of as evidence for the existence of molecules because the smell obviously comes from the cooking of the soup. Even though the actual smell can not be seen, the smell molecules linked with other molecules that are then diffused and eventually smelled.
2: An xray can show hairline fractures or bone chips. Technically, the skin could be cut open to look for some things related to this but the xray is more practical.
3: I believe that all gases have weight. I believe this because gases are made up of atoms and all atoms have a weight.
4: The most interesting thing I learned in lab today was when we were shown how to estimate the size of a single atom.
5: How is nitrogen put into liquid form?

lecture preflight 02
1: Smelling soup cooking is evidence for the existence of molecules because air has to apparent smell. This is very similar to the perfume exercise. Gases move about the room due to air circulation, and cooking releases a gas (liquid and some solid is being changed from their current states to a gas). This gas then spreads across a given container, the room. That being said, the nose detects the difference in smell and one can conclude that something had to enter the air (molecules) in order to create the change between no smell and the smell of soup.
2: Although this does not directly relate to science, we learn about theology and we cannot see any higher existence. Through some philosophy, people think/believe that they have proven the existence of one. We learn about gravity but we do not actually see the force itself pulling objects to the ground.
3: I know that the periodic table lists atomic weight for all elements. However some gases might be lighter than air which results in them rising up (think of party balloons filled with helium). But if an object has molecules then it will have some kind of weight. I would fill a container with a gas and set it on a scale, take a note of the measurement and subtract the weight of the container to obtain the weight of the gas.
4: I learned that when you mix cornstarch with water it creates a psuedo-liquid. It was really cool to play around with that substance. I had no idea that an object could be inbetween physical states.
5: Why is some snow sticky and great for snowballs, and other snow somewhat dry and is not able to be packed into any sort of ball shape?

lecture preflight 02
1: Smelling soup cooking is like the example of smelling the perfume at lab. The smell travels through the room because it's particles diffuse and spread all around the room. The molecules carry the smell through the room which is evidence of the existance of molecules.
2: Another situation where we learn about things we can't see would be learning about gravity. We cannot see gravity but we experience the effects of gravity all the time.
3: Yes, I think that when gases are in a container, they have weight. For example, a helium tank used to blow up balloons weighs a lot because of all the pressure from the amount of helium in the tank.
4: One interesting thing I learned in lab this week was that you can pour liquid nitrogen on your hand without getting frostbite. I thought that it would make your hand freeze if you touch it, but i was wrong. I also thought the corn starch lab was extremely interesting. It was so fun to play with the mixture we made and watch how it changed from a solid to a liquid.
5: Is there any way to get rid of the hiccups?

lecture preflight 02
1: The smell of the soup starts in one place, but as the air circulates around the smell is carried around by the air particles. So even though it starts in the kitchen, molecules help the smell travel into different parts of the house.
2: We learned about the shape of the object today by hitting a marble with it and noting which way it bounced off. We also learn about the wind, how fast it is moving and from what direction, eventhough we cannot see it.
3: You could weigh a balloon, then fill it up with gas and weigh it again to see if there is any difference.
4: When you mix cornstarch and water together, the product is a liquid/solid that is very interesting to play with and learn about.
5: What is quicksand made of?

lecture preflight 02
1: The molecules that make up the soup are carried by molecules in the air--this is how we are able to smell the soup.
2: When we are learning about astronomy and objects in space that are beyond human sight or the limits of technology, we have to make educated guesses about the location, structure, etc. of those bodies in space.
3: I remember learning that Carbon dioxide is heavier than air, and that it will sink to the bottom of a container if placed in one. Dry Ice is an example of carbon dioxide being heavier than air because you can actually see it sinking to the bottom of a container before it mixes with the surrounding air.
4: I learned that the molecules that make up a liquid are tightly packed just as they are in a solid, but they are able to "roll" over one another and move around unlike particles in a solid. In elementary school, I was taught that the molecules in a liquid were farther apart than in a solid.
5: Why do we have seasons?