Describe5 marksStandard
Benzene reacts with bromine to form bromobenzene. Describe the reagents and conditions needed for this reaction, and explain why the product is formed by substitution rather than by addition of bromine to the ring.
CAIE A Level Chemistry 9701 · Hydrocarbons
Hydrocarbons: describe 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.
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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