Question

The melting point of a substance is___________ (greater than /less than/same as) its freezing point.

Answer 1

1. Melting point: The fixed temperature at which a solid changes into its liquid state on heating is called the melting point of the substance.
2. Freezing point: The fixed temperature at which a liquid changes into its solid state on cooling is called the freezing point of the liquid.
3. The melting and freezing points of a substance are the same.
4. Melting occurs when heat is supplied to a solid whereas freezing occurs when heat is taken away from a liquid(when the liquid is cooled).

Hence, the melting point of a substance is the same as its freezing point.