Explain4 marksStandard
Nitrogen gas is the major component of air, yet it does not react readily with most substances at room temperature. Explain this lack of reactivity, with reference to the bonding in the nitrogen molecule.
CAIE A Level Chemistry 9701 · Nitrogen and sulfur
Nitrogen and sulfur: 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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