Question

Give an example to justify the statement that physical changes can be reversible as well as irreversible.

Answer 1

1. When water is frozen into ice, it is a physical change. It is reversible since ice can be converted to water again.
2. When a piece of wood is cut into very small pieces, it is a physical change. It is reversible since small pieces of wood cannot be converted back to the bigger piece of wood.
3. It shows that physical changes can be reversible as well as irreversible.