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My science teacher gave individual problem statements to each student or group and this was the one I was given. She also gave the class some vocabulary words, and I got "Air Pressure". I believe that you can crush the bottle by sucking the air out with your mouth but my teacher says you can't touch it. My friend told me that maybe you can ignite fire in the bottle to suck the air out but it wouldn't be possible because the bottle can melt if it's plastic. My teacher told me so to. So I'm thinking that there has to be some type of machine, instrument or something that can be put at the mouth of the bottle to suck out the air. Please help? I have no idea.

2007-02-20 08:11:42 · 13 answers · asked by Anonymous in Science & Mathematics Other - Science

13 answers

If you put it in a vaccuum the air will be sucked out because the air pressure out side of the bottle is lower. If your teacher has a machine that creates a vaccuum then use that. Or you can put it in the freezer with the lid on and it will collapse (this works better if you heat the air up inside it first).

2007-02-20 08:15:37 · answer #1 · answered by E 5 · 0 1

Make a plastic 2 liter soda bottle collapse without touching it! How cool is that???

You can't feel air, but it presses against surfaces. This phenomenon is called "air pressure."



WHAT YOU WILL NEED:

1. Ice
2. Funnel
3. Hot & cold water
4. 2 liter plastic soda bottle
5. Bowl



WHAT TO DO:

1. Pour hot water into the bottle. Let sit for a minute then put the lid on.
2. Lay the bottle in the bowl.
3. Pour ice and cold water over the bottle.
4. Stand the bottle up in the ice water

What happens??? The bottle collapses!!

WHY DOES THE BOTTLE COLLAPSE?

The warm air inside the bottle takes up more space. This is because the small particles that make up the air move faster and take up more room "running around" while they are hot. This makes more air pressure.



Once they are cooled, the small particles slow down and don't take up as much room, causing less air pressure. Since you have made much less air pressure inside the bottle than outside the bottle, the pressure of the air outside the bottle crushes it!

2007-02-20 16:18:04 · answer #2 · answered by ToasterDog 2 · 1 0

You are going to do some modest amount of 'touching'

Take the bottle to the highest place you can find, open it and seal it tight. It will contain rarefied air in proprtion to height.
take it to the lowest point you can find, simple air pressure will sqeeze the bottle, but if that's not enough , tie an anchor of significant mass and drop it in the ocean. crushed for sure.

Any chemical that absorbs nitrogen or oxygen, or both or whatever gass you fill can the bottle with, would drop gas pressure inside the bottle to create a vacuum.
Though excruciatingly slow, a simple mix of cement and water would absorb O2 from the bottle and crush it slightly. This is why biosphere 1 failed, the concrete sucked up too much oxygen.

Other techniques might include magnets, freezing, cold nuclear fusion, gravity fields.

Keep wathing tv and you might find a better idea on a cheese-it commercial.
How do they get all that cheese in there?

2007-02-21 11:33:02 · answer #3 · answered by SageTumbleWeed 2 · 0 0

1. Immerse the plastic bottle(Like packaged water bottle which are made of thin plastic) without it's cap for some time in warm water.
2. Them close the cap.
3. Put it in the freezer for some time like an hour or so.
4. You will find that it's crushed.

This is because when you put it in warm water the air expands and leaves the bottle. Then when you close the CAP still the air pressure inside the bottle is low. When you freeze it the air pressure falls further as the air gets compressed further and the bottle is crushed by the atmospheric pressure.

2007-02-20 16:16:22 · answer #4 · answered by Vikas 3 · 1 1

Put the bottle in the freezer, the cold will decrease the volume of the air in the bottle and the bottle will be crushed by the air pressure itself.

To get the best results fill the bottle with hot air first.

2007-02-20 16:16:40 · answer #5 · answered by psionne 3 · 1 1

Put the hot air in the bottle and cap it air tight. When the air cools it will contract and crush the bottle. Please prove to me that I didn't just do your homework for you by calculating the amount of volume decrease the bottle will experience. To do this you will need to find out what the coefficient of thermal expansion is for air.

This could also be done with water. Which one would crush the bottle more, air or water?

2007-02-20 16:22:53 · answer #6 · answered by Automation Wizard 6 · 1 0

Air pressure. If the bottle has warm water in it, then emptied and closed tight, then placed in ice water, the bottle will implode.The warm air there after the warm water was emptied takes up less space as it is cooled.

2007-02-20 16:16:22 · answer #7 · answered by science teacher 7 · 5 0

Put 10ml of water into the can. Heat the can over a bunsen burner until the water is close to boiling. Then turn the can over into a beacker of ice water. Then water vapor, which takes more room than liquid water, will quickly condense back into liquid water and crush the can.

2007-02-20 16:17:08 · answer #8 · answered by j_son_06 5 · 2 0

Put a few inches of water in the bottle. Place in a pot of water and bring to a boil. Seal the bottle and wait for the steam to condense. The bottle should crush.

2007-02-20 16:16:24 · answer #9 · answered by Barkley Hound 7 · 2 1

If you open the bottle, then heat it (without melting it), recap it, and let it cool, that should cause it to crush.

2007-02-20 16:17:36 · answer #10 · answered by Mr. Goodkat 7 · 1 0

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