How does particles of substance behave at its melting point?

The particles of the substace move away from each other and slip breaking the crystalline structure.


Explanation:


Melting is the change of phase from solid to liquid.


Melting is the result of adding heat to the solid.


The particles in a solid are arranged in fixed structures, called lattices, in which the partilces are packed closed together to each other, and so they cannot move one respect to others.


At the melting point, as heated is added, the partilcles vibrate and move more rapidly, gaining kinetic energy.


The kinetic energy gained by the heat transferred is not used to increase the temperature but to increase the speed of the particles which finally manage to slip out of the fixed structure and so become liquid.

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