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Atoms and Molecules — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceAtoms and Molecules1 Mark
Question
A change in the physical state can be brought about:
✓

Answer

  1. When energy is either given to, or taken out from the system.
Explanation:
When a solid changes into liquid, it absorbs energy. When a liquid changes into solid, it releases energy.

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