What is thermal energy?

Question

A. The energy associated with the motion of particles within a substance
B. The energy associated with the chemical reactions of a substance
C. The energy associated with phase change of substance
D. The energy associated with the temperature of a substance

Answer 1

Thermal energy is primarily defined as the energy associated with the motion of particles within a substance. This means it relates to the kinetic energy of particles due to their movement, which is influenced by temperature.

So, the correct answer is: A. The energy associated with the motion of particles within a substance.