Give one word or term for the following descriptions:
The amount of heat required to change $1 k g$ of a solid into a liquid state.

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Solution

The amount of heat energy required to change $1 k g$ of solid into liquid is known as latent heat of fusion.
Latent heat of fusion is the reason why ice at $0^{0} C$ doesn't instantly turn into water.
Even after reaching a temperature of $0^{0} C$ , some extra energy is required to convert ice into water.
The latent heat of fusion of water at $0^{0} C$ is $334 j o u l e s / k g$ .
Therefore, latent heat of fusion is the amount of heat required to change $1 k g$ of solid into liquid state.

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