define melting point of a substance what is the melting point of ice
define boiling point of a substance what is the boiling point of water
Melting point is defined as the temperature at which a substance changes from the solid state into the liquid state. The melting point of ice is 273 K (or zero degree Celsius).
Boiling point is the temperature at which a substance changes from the liquid state into the vapour state. The boiling point of water is 373 K (or 1000 C).