Question

what is meant by interconvertibility of the states of matter

Answer 1

Solid, one of the three basic states of matter, the others being liquid and gas. (Sometimes plasmas, or ionized gases, are considered a fourth state of matter.) ... Such properties depend on the properties of the atoms that form the solid, on the way those atoms are arranged, and on the forces between them.

Answer 2

means such substance can be converted into another state i.e liquids can changes into vapours and vapours can change into back liquids.......