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Why does a plastic bottle full of steam get pressed in if placed in a refrigerator?
When the temperature of a confined sample of gas is reduced, the pressure is reduced. Just before you cover the bottle, the steam in it has the same pressure as the air outside the bottle. (If the steam momentarily had higher pressure, some of it ran out. If the steam momentarily had lower pressure, some air ran into the bottle.) After you cover the bottle, nothing can get in or out of it. Then you cool the steam. The pressure inside drops when the steam cools. Now the pressure of the air outside the bottle is higher than the pressure inside the bottle, and the higher pressure outside crushes the bottle. ================================================ Do you REALLY want to see something cool, and shock the other people in the house ? Take the same plastic bottle, boil some water, pour some of the boiling water into the plastic bottle, and when the bottle is full of steam, cover it up tight. Watch the water in the bottle. As soon as it STOPS boiling, shove the bottle into a dish of ice. The water inside will START boiling again ! From the explanation above, you should be able to explain this. Here's a hint: Water boils at a lower temperature when there's less pressure on top of it. Boiling water in Denver is not as hot as boiling water in Brawley, California, because Denver is at higher altitude. so the air pressure there is lower.
Why does squeezing a plastic mustard bottle force mustard out to the top?
Squeezing the plastic mustard bottle increases the pressure inside the bottle. This pressure forces the mustard to flow out through the opening at the top of the bottle. This is due to a combination of the physical properties of the mustard liquid and the bottle's design.
Why when you suck a air of a bottle it shrinks?
When you suck air out of a bottle, you decrease the air pressure inside the bottle. The higher air pressure outside the bottle then pushes the walls of the bottle inwards, causing it to shrink. This is due to the difference in air pressure inside and outside the bottle.
What happens to the level of the water in the straw when the water in the bottle is cooled?
When the water in the bottle is cooled, it contracts and creates a lower pressure inside the bottle. The higher atmospheric pressure outside the bottle pushes the water up through the straw to equalize the pressure, causing the water level in the straw to rise.
What makes an egg go into a bottle?
force The burning of the matches heats the air in the bottle. The hot air is now expanded and thinner than the atmospheric pressure outside the bottle. When the egg is placed over the top of the bottle four things happen. First: The eggs acts like a seal on the top of the bottle. Second: The matches are starved for air and the flame dies out. Third: The air ( all gases) inside the bottle are cooling down very fast and contract. Finally the egg is pushed into the bottle due to the atmospheric pressure outside the bottle being greater and trying to equalize.
Is crushing a plastic bottle a physical reaction?
Crushing a plastic bottle is a physical change, not a physical reaction. This is because the plastic's chemical composition remains the same even though its physical form has changed.
Why does a plastic bottle crush when you drink out of it?
Basically, its from the suction from the person drinking it. actually its form the external air pressure crushing it as you remove air from the inside, if you leave a small gap as you smoke this will not happen. it is important to remember you are only removing the equalising air form the bottle, it is the inequality that makes vacuumed bottles crush and shaken soda bottles expand as they have higher air prssure than the outside, check you physics mate
What causes a plastic bottle when filled with hot water to contract when a lid is placed on the top?
We have to assume that the lid does not allow air to enter the plastic bottle. When the water is hot, the air above the water is also hot. When the air cools down, its volume decreases significantly. This, in turn, causes the pressure in the bottle to decrease such that atmospheric pressureis greater than the pressure inside the bottle. This causes the bottle to contract since the force exerted on the bottle due to atmospheric pressure is greater than the force exerted on the bottle due to the air pressure inside the bottle. The volume of the bottle decreases until the pressure of the air inside becomes equal to atmospheric pressure. The changes in volume, pressure and temperature can be explained by the equation pV=nRT, where p:pressure of gas V:Volume occupied by gas n:number of moles of gas R:molar gas constant T:Thermodynamic temperature of the gas
Why does a plastic bottle full of steam get pressed in if placed in a refrigerator?
When the temperature of a confined sample of gas is reduced, the pressure is reduced. Just before you cover the bottle, the steam in it has the same pressure as the air outside the bottle. (If the steam momentarily had higher pressure, some of it ran out. If the steam momentarily had lower pressure, some air ran into the bottle.) After you cover the bottle, nothing can get in or out of it. Then you cool the steam. The pressure inside drops when the steam cools. Now the pressure of the air outside the bottle is higher than the pressure inside the bottle, and the higher pressure outside crushes the bottle. ================================================ Do you REALLY want to see something cool, and shock the other people in the house ? Take the same plastic bottle, boil some water, pour some of the boiling water into the plastic bottle, and when the bottle is full of steam, cover it up tight. Watch the water in the bottle. As soon as it STOPS boiling, shove the bottle into a dish of ice. The water inside will START boiling again ! From the explanation above, you should be able to explain this. Here's a hint: Water boils at a lower temperature when there's less pressure on top of it. Boiling water in Denver is not as hot as boiling water in Brawley, California, because Denver is at higher altitude. so the air pressure there is lower.
What happens to a plastic bottle if air particles are removed?
If air particles are removed from a plastic bottle, the volume inside the bottle would decrease due to the absence of air pressure. The bottle may collapse or shrink in size as there is no longer any external pressure to counteract the elasticity of the bottle material.
Why does squeezing a plastic mustard bottle force mustard out to the top?
Squeezing the plastic mustard bottle increases the pressure inside the bottle. This pressure forces the mustard to flow out through the opening at the top of the bottle. This is due to a combination of the physical properties of the mustard liquid and the bottle's design.
Why CO2 gas comes out in force when bottles of soda is opened?
The cause is the pressure difference between the gas pressure in the bottle and the atmospheric pressure.
How do crush a bottle with ice and cold water?
As the water inside the bottle cools it uses less air pressure than the cool air outside. The results are crushing.
Why when you suck a air of a bottle it shrinks?
When you suck air out of a bottle, you decrease the air pressure inside the bottle. The higher air pressure outside the bottle then pushes the walls of the bottle inwards, causing it to shrink. This is due to the difference in air pressure inside and outside the bottle.
What happens to the level of the water in the straw when the water in the bottle is cooled?
When the water in the bottle is cooled, it contracts and creates a lower pressure inside the bottle. The higher atmospheric pressure outside the bottle pushes the water up through the straw to equalize the pressure, causing the water level in the straw to rise.
A demonstration of pressure could be done best with which of the following?
A plastic bottle with a pump
What makes an egg go into a bottle?
force The burning of the matches heats the air in the bottle. The hot air is now expanded and thinner than the atmospheric pressure outside the bottle. When the egg is placed over the top of the bottle four things happen. First: The eggs acts like a seal on the top of the bottle. Second: The matches are starved for air and the flame dies out. Third: The air ( all gases) inside the bottle are cooling down very fast and contract. Finally the egg is pushed into the bottle due to the atmospheric pressure outside the bottle being greater and trying to equalize.
