Question

what happens to the heat energy supplied when a solid has already melted

Answer 1

When the temperature reaches the meltingpoint, the solid, absorbs energy and increases its internal energy. ... At the same temperature, the solid absorbs an energycalled the latent heat of fusion to change its state to liquid. After the solid melts, its temperature increases further if more heat is supplied.

Answer 2

then the heat energy is use to get vapourise