Question

Enumerate the changes that take place inside the matter during the change of states.

Answer 1

Just few things happen at atomic level.
1 atoms tend to come close(in solidifying a substance) or it tend to move far apart (if it getting converted into the gaseous state)
2 Packing gets specific in different collision..
3 if we take string theory into account then relative no. Of quarks increases or decrease because everything is raised fron a string(as per string theory)