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Which process involves the transfer of heat through direct contact between molecules?

  1. Conduction

  2. Convection

  3. Evaporation

  4. Radiation

The correct answer is: Conduction

Conduction is the process that involves the transfer of heat through direct contact between molecules. In conduction, heat energy is transferred from one molecule to another through direct collision and interaction. This process occurs predominantly in solids where molecules are closely packed together and can easily transfer energy by vibrating and colliding with neighboring molecules. Convection involves the transfer of heat through the movement of fluid or gas particles. Evaporation is a process where a liquid changes to a gas state, absorbing heat in the process. Radiation is the transfer of heat in the form of electromagnetic waves.