5.15 describe the qualitative relationship between pressure and Kelvin temperature for a gas in a sealed container

5.15 describe the qualitative relationship between pressure and Kelvin temperature for a gas in a sealed container

The number of gas particles and the space, or volume, they occupy remain constant. When we heat the gas the particles continue to move randomly, bu with a higher average speed. This means that their collisions with the walls of the container are harder and happen more often. This results in the average pressure exerted by the particles increasing.

When we cool a gas the kinetic energy of its particles decreases. The lower the temperature of a gas the lass kinetic energy its particles have – they move more slowly. At absolute zero the particles have no thermal or movement energy, so they cannot exert pressure.