Question

What happens to the average kinetic energy of a substance as its temperature increases?

Answer 1

Hey mate...

Kelvin temperature is directly proportional to the average kinetic energy of molecules in a substance
, an factor increase in temperaturecauses an equal factor increase in the
average kinetic energy of the molecules.

Hope it helps ❤️

Answer 2

As the temperature increases the average kinetic energy increases as the velocity of the gas particles hitting the wall of the container. The force exerted by the particles per unit of area on the container is the pressure, so as temperature increases the pressure also increases.