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Matter in Our Surroundings — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceMatter in Our Surroundings1 Mark
Question
What happens when a solid melts:
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Answer

  1. Its molecules move faster
Explanation:
Solid-state has the least intermolecular space and most packed structure.
On heating of a solid, the intermolecular forces decrease, space between the molecules increases.
The particles gain energy and there is an increase in kinetic energy and the molecules move faster.

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