Heats of Fusion (Hf) in AP Chemistry

Definition

Heat of fusion, also known as enthalpy of fusion, refers to the amount of energy required to change one mole of substance from solid phase to liquid phase at constant pressure and temperature.

Related terms

Enthalpy:

Enthalpy is the total heat content of a system. It's used in thermodynamics to calculate the energy change in chemical reactions.

Mole:

A mole is a unit of measurement in chemistry. It represents 6.02214076 × 10^23 particles - atoms, molecules, ions etc., of the substance.

Phase Transition: Phase transition refers to the transformation from one state of matter (solid, liquid, gas) to another. Heat of fusion is involved during phase transitions between solid and liquid states.