a diagram of a red blood cell

Chemistry P2 tIps Read questions carefully and check answers thoroughly, especially in extended answers where more writing is required. The accurate use of chemical terminology is needed, as it removes ambiguity from responses. Clear statement of fact is crucial in the presentation of argument, and it is advised that only a narrow range of vocabulary be permitted when assessing understanding. Produce answers which include all relevant details for key definitions, explanations and chemical reactions in a concise fashion, with appropriate use of key vocabulary and use of information given in a question. Address ‘explain’ questions fully — not merely to state facts or general rules, but also to show how these combine to give reasons for chemical phenomena. For example, a secure understanding of bonding and structure within molecules, in particular for organic species, can then be used to link structural features to mechanistic probabilities. working in calculations should be shown to ensure that due credit can b