∗ Melting:-
The temperature at which things melt is called melting.
∗ Boiling:-
The temperature at which liquid things boil is called boiling point.
∗ Evaporation:-
When water is heated, it changes into water vapors. This is called evaporation.
∗ Condensation:-
In this process, steam changes into liquid water.
∗ Freezing.
When water is cooled, it freezes into form of ice. This is called freezing.