Question

Explain how heat energy brings change in dimensions of a body

Answer 1

1:A substance when heated, expands the the air present within the substance till expand due to heat and the dimensions may change at a very low scale.
2: if the object melts, then the intermolecular space within the object will change eventually effecting the dimensions of the object.

Answer 2

Answer:

• Due to heat, a phenomenon called thermal expansion takes place that makes any state of matter expand which changes the length, area and volume (dimensions) of a substance.
• Another phenomenon called negative thermal expansions makes some selective substances, when heated they contract and thus change dimensions.

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