Melting of a crystalline body is accompanied by the absorption of a certain amount of heat. In this case

Melting of a crystalline body is accompanied by the absorption of a certain amount of heat. In this case, its temperature does not change. What is the transmitted energy spent on?

The energy that a crystalline body receives, after it is heated to the melting temperature, is spent on breaking the bonds between molecules in the crystal lattice, so the body temperature stops rising.

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