Question

explain why heat energy is needed to melt a solid define latent heat of fusion​

Answer 1

Answer:

Heat energy is needed to convert solid into a liquid because heat energy increases the kinetic energy of the particles. ... So it chenge into a liquid state. The heat energy that it used to change 1 kg of solid into liquid at atmospheric pressure and at its melting point is called the latent heat of fusion.

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Answer 2

Answer:

Heat energy is needed to melt a solid because there exist forces of attraction between the molecules and heat energy is essential to overcome the forces of attraction. Latent heat of fusion is the amount of heat energy. required to change 1 kg of solid into liquid at atmospheric pressure at its melting point