Question

Define- boiling point and melting point?

Answer 1

The boiling point of a substance is the temperature at which the vapor pressure of the liquid equals the pressuresurrounding the liquid[1][2] and the liquid changes into a vapor                                                                              Melting point. ... The melting point (or, rarely, liquefaction point) of a solid is the temperature at which it changes state from solid to liquid at atmospheric 
pressure. At the melting point the solid and liquid phase exist in equilibrium.

Answer 2

$\huge\mathfrak{\underline{\underline{Boiling\:point:-}}}$

• The temperature at which a liquid starts boiling at the atmospheric pressure is known as boiling point.

$\huge\mathfrak{\underline{\underline{Melting\:Point:-}}}$

• The minimum temperature at which a solid melts to become a liquid at atmospheric pressure is known as melting point.