Physics · May / June 2018 · Paper 11 · Question 19
5054Thermal expansion of solids, liquids and gases
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.
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Correct answer: A. The molecules do not change size and the spaces between the molecules become larger.
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