# What happened to the air pressure in the bottle when you put it in hot water How do you know?

## What happened to the air pressure in the bottle when you put it in hot water How do you know?

Before adding boiling water to the bottle, the bottle was filled with room temperature air. Once the hot water was placed in the bottle, it heated up the air inside the bottle. Therefore, the air pressure pushing in was greater than the air pressure pushing out, causing the bottle to be crushed!

## When an outside force is put on a sealed bottle what happens to the pressure of the fluid inside the bottle?

The difference in pressure causes the bottle to collapse, because the forces pushing in from the outside are much greater than those pressing out from the inside.

Why do water bottles have air bubbles?

The amount of gas dissolved depends on the temperature of the water and the atmospheric pressure at the air/water interface. Colder water and higher pressure allow more gas to dissolve; conversely, warmer water and lower pressure allow less gas to dissolve. Hence bubbles along the insides of your water glass.

What do I know about force?

A force is a push or pull upon an object resulting from the object’s interaction with another object. Whenever there is an interaction between two objects, there is a force upon each of the objects.

### What causes the air pressure inside the bottle to decrease?

When air is heated it expands and some of it escapes out the bottle. When the matches go out, the air inside the bottle cools and contracts (takes up less space), thus creating a lower air pressure area inside the bottle than outside.

### Why does a plastic bottle collapse when air is pumped out of it?

If a bottle is capped and then left in the cold, the air inside the bottle cools faster than the air outside the bottle. This means the air outside the bottle is exerting more pressure than the air inside the bottle, and the bottle collapses.

What causes plastic bottle to expand?

When air is heated, it expands. As the product cools, the contents and/or the air in the headspace contract, creating a negative pressure within the bottle. This negative pressure can cause the side panels to suck in to compensate for the loss of product volume.

Why does a water bottle fill up with water then fill up?

The water is trying to get up into the bottle from underneath, which means that the air inside has nowhere to go. As water tries to push into the bottle, it compresses the air, causing the air pressure to rise, which pushes back against the water.

## What would happen if there was no gravity in a bottle?

But even without gravity the water would come out. By contrast if you have a bottle with a normal (atmospheric) environment, then there is equal pressure at the mouth of the bottle, and a slightly lower pressure at the surface of the water (lower by ρ g h where h is the height of water in the bottle).

## How does air get out of a bottle of water?

The water would emerge, followed by the air and, because it is at a higher pressure than vacuum, the air would take the handiest way out, through the cap. As the other answers state, there may be a slight very temporary increase in pressure at the neck of the bottle, also, depending on the pressure of the air,…

What happens to the volume of a water bottle at high altitude?

When you increase the altitude (such as on a plane) the air pressure decreases to less than one atmosphere, but the pressure of air inside the bottle is still at one atmosphere (ie higher pressure). The pressure inside the bottle will try to equalise and the way this is achieved is for the volume to expand.