Question

what happens to the particles of a substance as its temperature increases?
they move faster.
they move slower.
they lose some energy.
they move in a circular direction.

Explanation:

According to the kinetic theory of matter, when the temperature of a substance increases, the kinetic energy of its particles increases. Kinetic energy is related to the motion of particles. An increase in kinetic energy means the particles move faster.

Answer:

They move faster.