3.
Explain why a substance 'expands' on heat
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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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Explanation:
Hello ☺ Substance Expand on heating Due to movement in particles called atoms and evaporation also ...the particles in a liquid move around each other more when it is heated, and take up more room ...
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