R3 What are the mechanisms of chemical change?
This is the largest of the six main topics with 24 teaching hours recommended for Standard Level and 45 hours teaching time recommended for Higher Level. It is divided into three main strands which in the past have essentially gone under the headings of Acids and bases (R3.1), Oxidation and reduction (R3.2) and Organic chemistry (R3.3 & R3.4).Topic R3.1 - Proton transfer follows on neatly from Topic R2.3 How far? as...
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