What is the effect of increasing temperature on the kinetic energy of particles in a substance?

Increasing the temperature of a substance directly affects the kinetic energy of its particles. Temperature is a measure of the average kinetic energy of the particles in a substance; therefore, when the temperature rises, the particles gain energy. This added energy causes the particles to move more rapidly, resulting in an increase in their kinetic energy.

As temperature rises, the motion of particles becomes more vigorous, leading to faster translational, rotational, and vibrational movements, depending on the state of the substance (solid, liquid, or gas). This phenomenon is evident in various physical changes, such as when heating a gas, causing its volume to expand as the particles collide with each other and the walls of the container more forcefully.

Overall, the direct correlation between temperature and kinetic energy is a fundamental principle in thermodynamics, emphasizing that an increase in temperature correlates with an increase in the motion and energy of particles within a substance.