Question

justify that melting of ice is a physical change

Answer 1

Melting of ice is performed by raising the temperature to a certain extent and by decreasing the temperature, the liquid water can be changed to solid ice again,i.e, it is reversible. Moreover, when it changes to liquid, its formula still remains H2O and does not change to anything else,i.e, no chemical alteration occurs. Thus, it is a physical change.