In class we viewed a video by the great Bill Nye.  The video was designed to explain the states of matter and how these states go through changes.  I would like you to reflect on this video, by addressing the following questions:
1.  What did you know about solids, liquids and gases before watching this video?
2.  Now that you have watched the video, how did your knowledge about the subject change?  Please give specific examples.
3.  If you were to create a video over this subject, what would be some ways you would explain this concept?
 


Comments

HenryC
10/29/2011 14:43

1. Befor watching the video in new that a solid's atoms are really compact and the can be seperated by melting the solid. I knew that the atoms in a liquid are close but not so close so the item molds to what ever you but it in and it can turn into a solid by freezing and can turn into a gas by evaporating.. I knew that a gas' atoms are so spread out that we can't see them and it can be turned back into a liquid by coolind down.
2. I learned that not all liquids have to be heated by a fire or somethings like a fire to turn into a gas. With liquid nitrogen it is so cold that if you put it in a cup it will evaporate because it will be boiled by the houses tempature because the liquid nitrogen in something like -103 degrees.
3.I would do it just like the science guy. I would tell examples of each state then show how to change them to a different state. After that show the before and after looks of each object.

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EmilyB
11/01/2011 13:12

Before watching this video I knew that most solids are hard and the atoms inside of it are packed close together so the atoms don't move very much. I knew that all liquids were wet and teh atoms are not that close together and move a lot. Also, before I watched the video I knew that when in the form of gas, the atoms move rapidly and are far apart.
After I watched this video my knowledge has changed about the liguid nitrogeon. I knew that you had to keep it cold in order for it not to evaporate but I didn't know that it could make an onion break because it freezes the atoms and makes them very hard. I didn't think that liquid nitrogen could change things so rapidly for only a few moments. So a solid that isn't so hard could change into an extremely hard object in a matter of minutes.
If I were to create my own video about changing the speed of atoms and how soft things can change into hard things I would put something like a strawberry into liquid nitrogen and something like a piece of metal without being put into liquid nitrogen and have a contest to see which one is harder by droping them or hitting them against eachother to see which one will break faster.

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BrookeJ
11/01/2011 13:26

1. Before we watching the video I knew that most solids were hard matter and the particles and atoms were packed close together so they could not seperate and spreads out. Liquids can be turned into gases or solids and the atoms and particles are spread far apart where they are able to move around. I knew gases could be used to freeze things like nitrogen gas. In gases the particles are spread so far apart that they move around freely and never stop moving.

2. My knowledge has changed since I watched the video because before, I knew nitrogen gas was used to freeze things and you had to keep it in a special freezer for it to keep so cold, but I didn't know you could freeze a marshmallow and it shatter into a million pieces just by using nitrogen gas. Objects that are solids or even liquids could be frozen by liquid nitrogen and freeze in just seconds. This has made me want to use liquid nitrogen in the future to freeze things that need to be froze. Also before watching this video I didn't know that you could eat something after it has been put in liquid nitrogen. For example when Bill Nye dropped the marshmallow in liquid nitrogen and then heated it by putting it in his mouth.

3. If I was to create a video over this subject I would explain this concept by creating a video sort if like Bill Nye did accept I would use powerpoint to create my informational slides and movie maker to make animation. To demonstrate the concept I would freeze a banana with liquid nitrogen and take a baseball and use the banana as a bat to show how liquid nitrogen causes the banana to break into many pieces.

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LindsayB
11/01/2011 13:27

Before watching the video I knew that most solids are hard and they can be melted into a liquid. The atoms in a solid were very compact. I also knew that liquids are wet and can be frozen into a solid. The atoms inside a liquid are more spaced out than in the solid but not completely expanded. Last, I knew that most gases are invisible and can be turned into a liquid by using condensation. The atoms inside a gas are expanded enough to take up the space of an entire room.

Now that I have watched the video, my knowledge has changed because I now know that liquid nitrogen can be used to speed up the process of freezing something. For example, in the video Bill Nye used the liquid nitrogen to freeze an onion, a marshmallow, and a rubber ball. When he dropped the ball and the onion they shattered into pieces. When placed in an immediate amount of heat, the marshmallow rapidly went back to its normal state.

If I created a video explaining this concept I would use the idea that you had given us. I would freeze a banana and try to drive a nail into a block of wood. I would also try freezing a liquid with the nitrogen.

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bryan
11/02/2011 09:41

#1I knew that liquid nitrogen was the coldest thing on earth.Dry ice is the only thing that can change from a solid to a liquid.
#2My thinking did not change at all about solids,liquids and gases.
#3I Would explain it just like the scince guy did.

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patrickg
11/02/2011 10:17

I already knew that you can change a liquid to a solid by freezing it like for an example, if you put a glass of watter in the freezer then a after a while, it will freeze and you can change a solid into a liquid by doing the oppisite and put some ice out on the counter and watch it turn into a liquid.

I learned that if you pore liquid nitrogen over a bouncy ball then it wont be bouncy anymore and if you poor it over a onion then if u drop it right then it will shatter because it will freeze the solid.

If i would creat a video about this subject then I would use some people and get them crunched up in a circle and then i would explain when the depart then thats the same thing that happens to a gas. Now i would have the people dparting by now and then explain all the concepts and all that stuff but i would make sure that they understand what im tryin to teach them.

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KalebH
11/02/2011 14:17

Before we watched Bill Nye's Video I knew that a solid was a hard object that was used for certain things such as a hammer is used to nail in a nail etc.I also knew that a liquid was a dense liquid that took up space of a container such as a bottle. I knew that gas was everywhere around us such as the air we breathe and what we ex-hale.

After I watched the video I thought that no liquid could be so cooled that it could turn into a soild. But after I watched it I realized that one liquid can, and that liquid is called Liquid Nitrogen. I had no idea that, that type of liquid could make an onion crash and break just like glass. Also I realized that it could make a bouncy-squishy as hard as a rock. Plus I Learned that if you left the liquid out for more than 5 or 10 secs that it would turn into a gas. Also I learned that when he ate the marshmellow after being in Bill Nye's mouth that his mouth was so warm that as soon as he closed his mouth that most of the marshmellow turnewd into gas.

If I had to create a video over Bill Nye's video I would do almost the whole show about Liquid Nitrogen. I would get some non-hard objects and use them in the nitrogen to freeze them. Then I would get a nail and try to show them that the object is so hard that it can drive a nial into a piece of wood.Then I would test out of three objects which one could drive in the nail the farthest.

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KoreyW
11/03/2011 05:45

1. Before the video, I knew that solids, liquids, and gasses were all made of particles. I knew that the particles moved the fastest in gaseous form and slowest in solid form.

2. Now after watching the video, I now know that you can get the particles of an object so close that when you drop it, it shatters. Bill Nye took a bouncy ball and put it in Liquid Nitrogen. Then he took it out and dropped it and it shattered.

3. If I were to create a video over this subject, I would recreate the part about Liquid Nitrogen. I would use a bouncy ball, apple, and an orange to show that you can get their particles so close if you drop them they will shatter. I would show an enlarged animation of particles in the solid, liquid, and gaseous state.

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Samantha S
11/03/2011 12:14


Before I watched this video, I basically knew a lot about how solids and liquids and gasses are made up of particles, and that they move differently with each state. I also knew that in order to make something (ex: water) from a solid to a liquid you must use energy, such as heat. What I did not know though, was that if you put an onion in liquid nitrogen that it would shatter, as would the rubber ball, as Bill proved. If I was to create a video over this concept, I would crate an animation to show how the particles move less when extracted from heat, and how, with enough heat, they are ‘energized’ and bounce around a lot.

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JacobC
11/03/2011 12:35

Before I watch the video I know that solids and liquids and gasses were all made of particles. I knew that the particles moved them fastest in the form of slowest and that’s all I new

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Emily R.
11/04/2011 06:31

1. What I already knew solid, liquid and gas are made out of particles. I also knew a few examples of it is a liquid is like a glass of water, a solid is like a peice of frozen ice, and an example of nitrogean.
2. I think that mine has changed because I have a lot of stuff memorized from the liquid nitrogen.
3. I would change the video by putting the onion and all of the other ingredents.

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bryan
11/04/2011 08:35

I knew that liquid nitrogen was the coldest thing on earth.Dry ice is the only thing that can change from a solid to a liquid.
My knowlage did change about the soilds liquids or gases.I knew a lot about the three stages of matter before and after. The cool thing was he shatterd the bouncy ball in to a millon peices after he stuck it into the liquid nitrogen.
I would explain a little difrent from how the science guy did.

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KavanC
11/04/2011 09:43

Before I watched the movie I knew that solids, liquids, and,gasses had parrticles.I knew nothing about liquid nitrogen and never knew a bouncey ball could be like glass.

Now that i watched the movie i know that a bouncey ball can bust and i know that particles can move in diffrent speeds.

If i maid a video like this i would make it entertaining but i would use diffrent objects.I woulld us a balloon and Water in the balloon to see if you can see water particles.I would show people that when you have a item like food you can see the particles and show them that you can take jello and make it hard enough when you drop it it busts.

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cordalef
11/04/2011 12:17

Before I watched the Bill Nye video over matter I already new most of what they discussed in the video. I new that solids partials were compacted had a defined arrangement, and vibrated, not enough movement for us to see with the naked eye. I knew that liquids had a defined volume, but now defined shape, this is because the partials don't have enough attraction to keep them in a fixed position. I also knew about gases. I knew that gases particles have no attraction to one another, there mass is infinite, by that I mean the gas will spread out to fill any container. I also knew by using liquids like liquid nitrogen you can pull the particles closer together to create a harder substance.

I knowledge of matter hasn't changed any. Although I have learned that that different things like nitrogen and oxygen can be turned into liquids, but they have to be kept at really low temps. to remain a liquid.

If I was going to make a video over this concept I think I would use about the same format. Although I don't think I would use liquid nitrogen, because I would cause more harm to myself than good.

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Breanna Reid
11/04/2011 20:16

1. I knew that a solids, liquids, and gases were all made up of atoms, molecules, and ions. Also, they are states of matter that have properties that define the state that is being addressed. A solid in my words is a hard stable shape. A liquid is like water that moves to fill the shape of its container. A gas has no defined shape that moves freely.
2. Well, to me it really didn't change it stayed the same. The video mostly stated what the definitions of solids, liquids, and gases. Like in the beginning of the video Bill Nye states what a solid, liquid, and gas is. But, he does it in a sense that it is more informational but, you don't feel that it is. you feel that is is interesting because, there is always something going on.
3. Like, the way in which he explained the concept he used interesting facts and fun displays I would use like all of the information that he did and the displays.

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dylanf
11/05/2011 18:59

1.Before watching the video I knew what objects were solids, liquids, or gasses but not how they were made or what their particles were like.
2.Now that I watched the video I know that the particles in a solid are pacted together very closely, and that the particles of a liquid are close together but move around some, and that the particles of a gas are very far apart and move in every direction.
3.If I was to make a video on this concept I think I would try to make different diagrams saying either solid, liquid, or gas and each one would have the particles below it moveing the way they do for that state of matter.

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Tatum
11/06/2011 13:55

1. I did not know very much about solids, liquids and gases before I watched this vidio of Bill Nye. All that I knew about this subject was that they are all a state of matter.

2. Now that I have watched this vidio I have learned that all of these states of matter are made up of particles. What makes all of these things different is that the particals all move at a different speed in each sepperate state.

3. If I were going to make a vidio like he did I would use diagrams, charts, and creative little facts about matter. I would also figure out new ways to display facts on this vidio.

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TheresaHarto
11/06/2011 16:40

Before watching this Bill Nye video I had prior knowledge of solids, liquids, and gases. I knew that they were different states of matter. I also knew they could change from one state to a new state by different freezing or melting points because of the objects particles.

After watching this video I now know about liquid nitrogen. Liquid nitrogen is very hard to keep in its liquid state because it needs to be kept at a very low temperature. Liquid nitrogen freezes at −210 °C. If this nitrogen is not kept at this temperature it will instantly change into a gas. This is because when liquid nitrogen comes in contact with warmer air it immediately boils under the circumstances; because it is going from a very low temperature to a warmer temperature in a short period of time.

In Bill Nye's video he shows objects being froze with liquid nitrogen. When these objects are froze and Bill drops them, they shatter. They shatter because the particles are so closely compacted. In my video I would try to re-create this illusion. I would show different diagrams and factors of the occurrence of what is happening. These diagrams would explain why these objects shatter and the circumstances these objects are under.

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BrookeJo
11/06/2011 18:15

Before I watched the video I knew that solids, liquids and gases are all states of matter. I also knew that liquid can turn into a solid or gas. A solid could turn into a liquid, and a gas can turn into a liquid.

My knowledge changed about solids. I didn't know that if you took a solid like a onion and got its particles so packed together and hit it with something like a knife, it could shatter.

If I created a video over the subject, one thing I would do to explain the subject would be to put ice in a pot and heat it so that is would turn into a liquid and then it would turn into a gas. I would also use liquid nitrogen to show that if an objects particles get so packed together it could shatter.

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Lauren M
11/07/2011 09:17

What I knew about solids, liquids, gases is the mostly what we have learnt in class. Like how solid’s particles are packed tightly together, Liquids particales are loose and free, and gases particales move rapidly through the air and are free and open.
Sence I have whatched the video I now know that you can freeze liquid and it turns to solid and I can evaporate liquid which turns to gas. I also learned how to use liquid nitrogen and how to turn anything into and hard solid.
I would explain how to do the liquid nitrogen experiment and how to transform solids, liquids, and gases.

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