Question

When a solid melts, its temperature remain the same,so where does the heat energy go?

Answer 1

the heat energy get used up in changing the state of matter . in short it is because of latent heat of vapourisation

Answer 2

Heya, here is a more brief answer....

when a solid melts, its temperature remains the same because the heat produced is absorbed by the object to overcome the force of attraction of solid particles to change its state. The hidden heat is termed as latent heat.

Hope it helps u...^_^