Describe7 marksChallenge
Describe the hybridisation, shape, and bond angle of the carbon atoms in methane (), ethene (), and ethyne (). In your answer, state whether each molecule is planar and classify each as straight-chained, branched, or cyclic.
CAIE A Level Chemistry 9701 · An introduction to organic chemistry
An introduction to organic chemistry: describe question
How this question is marked
7 marks, so the mark scheme is looking for about 7 separate creditworthy points. Making the same point twice in different words earns it once.
Describe means: Say what happens or what something is like, in order and with detail. You are not being asked why. If there is data, quote it: name the trend, then give figures with units at the points where it changes.
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