Question

Heat energy is:

Options

• Sum total of K.E. of the molecules of matter only

• Sum total of P.E. of the molecules of matter only

• Sum total of kinetic and potential energies of all the molecules

• None of these.

Answer 1

Sum total of kinetic and potential energies of all the molecules

Explanation:

Heat energy is the total kinetic and potential energy of all the molecules in a substance. Options that include only kinetic energy or only potential energy leave out part of this total.