What happens to the gas particles when the temperature of the gas increases?

When the temperature of a gas increases, the kinetic energy of its particles also increases. This is because temperature is a measure of the average kinetic energy of the particles in a substance. As the temperature rises, the gas particles gain energy and begin to move faster. This increased motion can lead to more frequent and more forceful collisions between the gas particles themselves and the walls of their container, contributing to an increase in pressure if the volume is held constant.

The relationships between temperature, kinetic energy, and the behavior of gas particles are foundational to understanding gas laws. For example, according to the kinetic molecular theory, higher temperatures result in higher speeds of gas molecules, which is directly related to an increase in energy. This is why the answer indicating that the gas particles move faster as they have more energy is the correct choice.