Question

why on heating a solid at its melting point,heat energy is converted to potential energy?​

Answer 1

Answer:

Heat is the total energy contained within a substance. As a solid is heated, its temperature increases as the molecules move faster. During the phase change, when solid melts into liquid, its temperature remains constant as the heat energy is stored as potential energy

Answer 2

Answer:

Heating increases the inter-molecular space between the particles. The stored potential energy increases with the increase of the inter-molecular space whereas, the force of attraction between the particles decrease and kinetic energy convert into potential energy