Ice kept in a beaker slowly melts and turns into water. The water in the beaker on solidification i.e., freezing turns back to ice. Give four reasons why the change from ice to water and water back to ice is considered a physical change.

Change from ice to water and water back to ice are considered as physical changes because:

1. The change is temporary.
2. It is a reversible change. Heating of ice turns it into water and cooling of water turns it back into ice.
3. No new products are formed since ice and water are chemically H₂O.
4. Properties of the original substance are not altered.