This dictionary provides an explanation of the main ideas and concepts central to chemistry. Each entry begins with a one-sentence definition which explains why the term is important. These are followed by a fuller explanation, and, where appropriate, examples, diagrams, tables and equations. Key terms such as inorganic chemistry, organic chemistry, physical chemistry, the chemical industry, and qualitative analysis tell the user about the main features of important aspects of chemistry, with cross references leading to related terms in each field. Other entries give a historical perspective,...