This is the ideal reference book for students of chemistry. This great study aid contain topics arranged thematically so that words are explained in context and include a fully integrated system of cross referencing plus a comprehensive index. This reference books contains clear definitions, in straightforward language, of all the key terms and concepts. Comprehensive cross-referencing provides links between related areas of study. The book is brightly illustrated, with clear diagrams to help interpret, clarify and explain complex concepts. A detailed index guarantees easy access to every subject in the book. This book is an essential study guide for SAT and GCSE students.