Explain4 marksStandard
Alkanes are generally unreactive towards polar reagents such as concentrated sulfuric acid and aqueous potassium manganate(VII). Explain this lack of reactivity in terms of the bonds present in alkane molecules.
CAIE A Level Chemistry 9701 · Hydrocarbons
Hydrocarbons: explain question
How this question is marked
4 marks, so the mark scheme is looking for about 4 separate creditworthy points. Making the same point twice in different words earns it once.
Explain means: Give the reasons or the mechanism: why or how something happens. Link each point to the next with because, so or which means. A list of facts with no links usually loses the reasoning marks.
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