Temperature Increase in a Gas
Science: KS3, topic 2.1.11
Temperature Increase in a Gas
The pressure of a gas produces a net force (the sum of all the forces) at right angles to the wall of a container. As you increase the temperature of a gas, its particles get more kinetic energy and move faster.
Fixed container
- If we increase the temperature of gas in a fixed volume, then the particles will collide with the container walls with more force.
- This means that the pressure will increase.
Stretchy container
- An increase of temperature leads to higher kinetic energy of particles.
- These particles collide with the walls of the container with more force.
- If the container can expand (increase its volume), it will.
- This is because the gas pushes it outwards.
Test yourself on Temperature Increase in a Gas
What happens to a balloon if the temperature of the gas inside it increases?
Select the true statement in each pair
A sealed metal canister of gas is cooled instead of heated. What happens to the pressure of the gas inside?
A sealed metal canister and a balloon contain the same amount of gas at the same temperature. If both are heated by the same amount, which one shows a bigger increase in pressure?