Question

The heat required to change a substance from the solid to the liquid state is referred to as the

A) heat of melting.
B) heat of fusion.
C) heat of vaporization.
D) heat of freezing.
E) heat of condensation.

Answer 1

The heat required to change a substance from the solid to the liquid state is referred to as the heat of fusion. Fusion is an endothermic process where energy is required to break the intermolecular interactions between molecules.

Step-by-step explanation:

The heat required to change a substance from the solid to the liquid state is referred to as the heat of fusion. Fusion, or melting, is an endothermic process where energy is required to break the intermolecular interactions between molecules. The enthalpy of fusion, AHfus, is the amount of heat needed to cause a phase change from solid to liquid. The enthalpy of fusion of ice is 6.0 kJ/mol at 0 °C.