Question

What are reversible and irreversible changes? Give one example for each.

[2 Marks]

Answer 1

Reversible change : When a change in a substance can be reversed by changing the conditions, it is said to be a reversible change. Example : Melting of ghee or wax. [1 Mark]

Irreversible change : When a substance can not be brought back to its original state after a change, it is said to be an irreversible change. Example : Souring of milk. [1 Mark]