Question

what happens when the thermal energy of a substance increases?
the motion of the particles in the substance increases, and the temperature of the substance decreases.
the motion of the particles in the substance decreases, and the temperature of the substance increases.
both the motion of the particles in the substance and the temperature of the substance decrease.
both the motion of the particles in the substance and the temperature of the substance increase.

Explanation:

Thermal energy is related to the kinetic energy of particles. When thermal energy increases, kinetic energy of particles increases, leading to more motion and a higher temperature.

Answer:

The motion of the particles in the substance and the temperature of the substance increase.