Question

When solids are heated, it usually
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Answer 1

$\large\bold\pink{\underline{Answer :-}}$

All three states of matter (solid, liquid and gas) expand when heated. The atoms themselves do not expand, but the volume they take up does. When a solid is heated, its atoms vibrate faster about their fixed points. The relative increase in the size of solids when heated is therefore small.

Answer 2

Answer:

the particles gain energy and start to vibrate faster and faster.