CAIE A Level Chemistry 9701 · The Periodic Table: chemical periodicity
The chlorides of the elements across Period 3 react with water in different ways. Suggest, in terms of structure and bonding, why the reaction of with water produces an acidic solution, whereas the reaction of with water does not.
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.
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.
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.