Compare5 marksStandard
A gas cylinder contains a real gas at high pressure and low temperature. Compare the behaviour of this real gas with the behaviour of an ideal gas under the same conditions, and explain why the ideal gas would not condense.
CAIE A Level Chemistry 9701 · States of matter
States of matter: compare question
How this question is marked
5 marks, so the mark scheme is looking for about 5 separate creditworthy points. Making the same point twice in different words earns it once.
Compare means: Give similarities or differences between two things, and say which side each point belongs to. Write each point as a pair, for example: A is X, whereas B is Y. Two separate descriptions rarely earn the marks.
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