Question

What happens to the particles of matter during the change of states?

NCERT Class 9th Science Ch 1 Matter in Our Surroundings

Answer 1

the particles of matter may contracts sometimes or expands sometimes during the changes of matter.

Answer 2

The particles when they are changing from one state to other the energy might liberate or even absorbed. The particles can even lose or gain the mass in a very little way. The particles can even get their characteristic like the arrangement of the molecules, inter molecular spaces etc. will change a lot.