Question

Differentiate between reversible and irreversible changes.Explain with the help of an activity.

Answer 1

Answer :-

• Physical changes are mostly reversible changes. Almost all the chemical changes are irreversible changes. In reversible changes, a substance can return to its original form whereas under irreversible change, a substance cannot return to its original form. When a substance undergoes a chemical change, its molecular composition is changed entirely. Thus, chemical changes involve the formation of new substances.

The difference between reversible and irreversible changes is -

1. In reversible change, a substance can return to its original state whereas, In irreversible change, a substance cannot return to its original state.
2. In reversible change, the chemical properties of the substance do not change whereas, In irreversible change, the chemical properties of the substance change.
3. Most physical changes are reversible changes whereas, All chemical changes are irreversible changes.

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Answer 2

Explanation:

Difference between reversible changes and irreversible changes

Reversible changes Irreversible changes

A substance can return to its original state. A substance cannot return to its

original state.

The chemical properties of the substance do not change. The chemical

properties of the substance change.

Most physical changes are reversible changes. All chemical changes are

irreversible changes.

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