Question

explain in detail why a substance expands on heating

Answer 1

Answer:

When a substance is heated, its molecular movement increases. Due to this, the average distance between the molecules also increases, thereby increasing the volume of the substance, i.e., expanding the substance. However, the movement of molecules depends upon the state of matter.

Explanation:

When substances expand or contract, their particles stay the same size. It is the space between the particles that changes: the particles in a solid vibrate more when it is heated, and take up more room. the particles in a liquid move around each other more when it is heated, and take up more room.

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Answer 2

Substance expands on heating because when we heat any substance when its molecules start vibrating and due to that vibration the particles started moving far from each other. The space between atom increases. So it expands.

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