Compare5 marksStandard
Compare the carbon-carbon bond in ethane, , with the carbon-carbon bond in ethene, . In your answer, refer to the types of covalent bonds present, the bond lengths, and the relative reactivity of the two compounds.
CAIE A Level Chemistry 9701 · Chemical bonding
Chemical bonding: 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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