Clear coverage of the latest specification from an experienced author team of examiners and teachers plus a free Students CD-ROM. This new edition follows the syllabus exactly and is written in two parts reflecting the AS and A Level section division of the syllabus. - Improves exam performance with annotated sample exam answers at three levels - Offers additional support on a Students CD-ROM included with every book - Provides opportunities for self assesment with worked examples and consolidation questions The Students CD-ROM features: - interactive tests - topic summaries - key terms - additional questions - a revision checklist for each topic - informations and advice in revision planning Answers to the questions in the Students Book can be found on the Teachers CD Rom.