when a liquid vaporises its temperature remain the same so where does the heat energy goes
Answers
The temperature remains constant till all solid melts into liquid. This is because the heat that is supplied for changing a solid state into its liquid state is used for overcoming and weakening the particle-particle attraction force. The solid substance thus absorbs heat energy without showing any rise in temperature till the entire solid is converted to liquid. And this heat energy is termed as 'Latent heat of Fusion'.
Now where does the heat energy goes ?
It goes into separating the particles of the solid. When a material is solid, its molecules hold together due to intermolecular forces. When a material is liquid, it flows freely because it is not bound by these forces. But in order to go from the first to the second, those molecules have to be broken apart from each other. That's where the heat energy goes.