Fully revised and updated, the sixth edition of this popular dictionary is the ideal reference resource for students of chemistry, either at school or at university. With over 4,700 entires - over 200 new to this edition - it covers all aspects of chemistry, from physical chemistry to biochemistry. The sixth edition boasts broader coverage in subject areas such as forensics, metallurgy, materials science, and geology, increasing the dictionary´s appeal to students in these related fields. There are also biographical entries on key figures, highlighted entries on major topics such as polymers and crystal defects, and a chronology charting the main discoveries in atomic theory, biochemistry, explosives, and plastics.