4.2a Heat is a transfer of energy (usually thermal energy) from a body of higher tem-perature

to a body of lower temperature. Thermal energy is the energy associated with

the random motion of atoms and molecules.

4.2b Temperature is a measurement of the average kinetic energy of the particles in a

sample of material. Temperature is not a form of energy.

4.2c The concepts of kinetic and potential energy can be used to explain physical

processes that include: fusion (melting), solidification (freezing), vaporization (boiling,

evaporation), condensation, sublimation, and deposition.