Science, asked by bishweshwarnayak, 10 days ago

explain expansion and contraction on the basis of molecular theory . class 5​

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Answered by asadbinabbas96
1

Answer:

Substances expand (increase in size) when they get warmer, and they contract (decrease in size) when they get cooler. This property can be useful. For example: Thermometers work because the liquid inside them expands and rises up the tube when it gets hotter.

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