The particles of solids are tightly packed, yet solids expand on heating. How?
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In a solid the strong attractions between the particles hold them tightly packed together. Even though they are vibrating this is not enough to disrupt the structure. When a solid is heated the particles gain energy and start to vibrate faster and faster. ... The energy is provided when the solid is heated up
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Solids expand on heating... Bcoz their intermolecular attractions decrease.... And spaces bw their atoms increase
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