Illustrated revision and practice. Absolute clarity is the aim with a new generation of revision guide. This guide has been expertly compiled and edited by subject specialists, highly experienced examiners and a good dollop of scientific research into what makes revision most effective. Written specifically for the AQA specification, but would be suitable revision for other boards. Contains Over 150 marks worth of examination style questions. Answers provided for all questions within the book. Illustrated topics to improve memory and recall.