Question

The amount of heat energy required to melt a given mass of a substance at its melting point, without any rise in its temperature is called the ______.

Options

• specific heat capacity.

• specific latent heat of fusion.

• latent heat of fusion.

• specific latent heat of freezing.

Answer 1

The amount of heat energy required to melt a given mass of a substance at its melting point, without any rise in its temperature is called the latent heat of fusion.

Explanation:

Latent heat of fusion is the total amount of heat energy needed to change a substance from a solid to a liquid state at a constant temperature. This energy is used to break the bonds holding the solid structure together, rather than increasing the kinetic energy of the molecules.