Question

Differentiate between Reversible and Irreversible Changes.

Answer 1

Reversible change

Irreversible change

Reversible changes can be easily reversed to form the ‘original substance.’ This change is only temporary. In reversible changes, the substance's chemical characteristics remain unchanged. The majority of physical changes are reversible. For example, Ice melts into water, which then freezes into ice. Melted chocolate can be changed back into solid chocolate by cooling.

Irreversible changes are ones that cannot be reversed and materials cannot be returned to their original state. Irreversible changes are permanent. In reversible changes, the substance's chemical characteristics alter. All chemical changes are irreversible. For example, When paper is burned, it turns into ash and smoke, and the paper cannot be recovered from the ash and smoke. Cement that has been combined with water cannot be returned to its original state.