What is the term used for the transmission of heat between molecules of the same material?

The term that describes the transmission of heat between molecules of the same material is conduction. This process occurs when heat energy is transferred through direct contact from one molecule to another, leading to an increase in temperature of the material itself. In conduction, the atoms or molecules of the substance vibrate more vigorously as they gain energy, and this energy is passed along to neighboring molecules.

Convection involves the movement of heat through liquids or gases and relies on the bulk movement of the fluid rather than molecular contact. Radiation, on the other hand, refers to the transfer of heat through electromagnetic waves and does not require any medium for transfer, such as air or water. Insulation is not a method of heat transfer but rather materials used to slow down the transfer of heat, preventing it from escaping or entering a space. Therefore, conduction is the correct term for describing heat transfer within the same material at the molecular level.