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    I was wondering whether anyone knows the 'need-to-know' list of Formulae for this GCSE syllabus. The specification is ambiguous at best saying, for the acids, bases and salts section, "candidates should be able to name the substances needed to be able to make a named insoluble salt". This doesn't hugely help. In the revision guide it says one needs to know hydrochloric acid, nitric acid and sulphuric acid but doesn't mention the need to know anything else. Can anyone offer something more definitive? Many thanks
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Updated: September 17, 2015

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