What is true about kinetic energy?

Question

Responses-

a) Molecules within a substance have kinetic energy when that substance moves.

b) Cold molecules have potential energy but no kinetic energy, as kinetic energy is experienced as heat.

c) Molecules of liquids and gases are in constant motion, so they have kinetic energy.

d) All molecules are in constant motion, so they all have some kinetic energy.

Answer 1

All of the responses are true.