Question

EXPLAIN WHY HEAT ENERGY IS NEEDED TO MELT A SOLID?

Answer 1

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

Answer 2

Heat energy is needed to melt a solid because heat energy increases the kinetic energy of particles, which is sufficient enough to break the attraction or bond between the particles and they start moving faster. As a result, there is a change in the state of matter from solid to liquid.