CAIE A Level Chemistry 9701 · Chemical bonding
Water has a much higher surface tension than propane, , at the same temperature. Ice floats on liquid water.
Suggest explanations for both of these properties, in terms of the intermolecular forces between the molecules and the arrangement of the molecules.
6 marks, so the mark scheme is looking for about 6 separate creditworthy points. Making the same point twice in different words earns it once.
Suggest means: Apply what you know to an unfamiliar situation. There may be more than one acceptable answer. Reason from the principle you have learned to the new context, and say which principle you are using.
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