Heating the air inside causes the bottle to expand-the presure inside is enought o force the walls out,
The volume inside the bottle gets smaller.
To remove the plastic liner inside bottle caps, use a bottle opener to gently pry it off. Alternatively, you can twist the plastic liner while pushing down on it to pop it out of the cap.
When you put an empty plastic bottle in the freezer, the air inside the bottle will cool and contract, causing the bottle to collapse or deform. This is due to the decrease in air pressure inside the bottle as it cools down.
When you crush a plastic bottle, you decrease the volume inside the bottle. This increase in pressure (due to the decrease in volume) is what makes the bottle crush. The atmospheric pressure outside the bottle remains constant, causing the bottle to collapse under the increased pressure inside.
The greatest increase in pressure will occur at the middle of the bottle where you are applying the squeezing force. This is because applying a force to a closed container will compress the air inside, leading to an increase in pressure at the point where the force is being applied.
Because the substance inside the bottle is highly volatile and can be lost by evaporation if the bottle is not closed.
The air inside shrinks its space needed.
it moist inside the plastic
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.
When the bottle is put in the hot water the air inside it heats up and expands (the atoms become more energised and move farther away from each other). When the lid is put on and it is put in the fridge, the air contracts; the pressure inside the bottle becomes lower than the air pressure outside the bottle and it gets crushed.
The greatest increase in pressure will occur at the middle of the water bottle where you are squeezing it, as this is where the force is being applied to compress the air inside. This compression of air will result in an increase in pressure at that point.
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.