Question

Explain how, the removal of thermal energy (heat) from matter affects its particles.

Answer 1

When a substance is heated, it gains thermal energy. Therefore, its particles move faster and its temperature rises. When a substance is cooled, it loses thermal energy, which causes its particles to move more slowly and its temperature to drop.

Answer 2

If thermal energy (heat) is removed from a substance, the particles in that substance will slow down.