O-LevelPhysicsThermal Physics5054/11 · May/June 2018 · Q191 Mark
What happens when a solid is heated and expands?
AThe molecules do not change size and the spaces between the molecules become larger.
BThe molecules expand and the spaces between the molecules become larger.
CThe molecules expand and the spaces between the molecules become smaller.
DThe molecules expand and the spaces between the molecules do not change size.
✓ Correct answer
A: The molecules do not change size and the spaces between the molecules become larger.
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