Chemical quantities — AQA GCSE Combined Science Synergy
Teaching note based on the AQA specification.
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- This topic shows how chemists use quantitative methods to determine the formulae of compounds and the equations for reactions. Given this information, they can determine reacting quantities, assess the purity of products and monitor the yield from chemical reactions. The methods can be developed and applied in the context of other chemical topics in this specification. Note that arithmetic computation, ratio, percentage and multi-step calculations feature throughout this section.