Question

How does a liquid change into a solid on cooling?

Answer 1

• The change of state can be explained on the basis of kinetic theory

• As a liquid is cooled its molecules lose kinetic energy
• The movement of particles slows down.
• The attraction between the molecules increases. The intermolecular space between the particles decreases, causing a change in state from a liquid to a solid.
• Then a phase transition from liquid to solid state takes place which is called freezing