Question

define: melting point, Freezing point & Boiling point.

Answer 1

1.Melting point is temperature at which a solid converts into gas or liquid.

2.Freezing point is the temperature at which a liquid or gas freezes to form a solid.

3.Boiling point is the temperature at which a liquid turns into vapour.

Answer 2

$Explanation$ :-

Melting point :-

Melting point is the temperature at which a solid becomes a liquid at normal atmospheric pressure.

Freezing point :-

change of liquid into solid in very low temperature is known as freezing point (0°C)

Boiling point :-

The boiling point of a substance is the temperature at which the vapour pressure of the solid equals the pressure surrounding the liquid and the liquid changes into vapour.