Answer :
Final answer:
Heat transfer is the transfer of energy due to temperature differences between substances involving the exchange of kinetic energy.
Explanation:
Heat transfer is the spontaneous transfer of energy due to a temperature difference. Thermal energy in matter is due to the kinetic energies of its constituent atoms or molecules. When two substances are in thermal contact, kinetic energy is transferred from the substance with higher temperature to the one with lower temperature through particle collisions.
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