The fourth edition of this popular, student-friendly textbook provides a course in chemical literacy. With complete yet concise coverage of core topics, it starts from scratch and assumes only minimal prior experience of mathematics and science. This new edition has been fully updated and now features full-colour throughout. It contains a section on special topics such as environmental chemistry, forensic chemistry and nuclear and radiochemistry and also includes two new chapters on 'chemistry saving lives' and the hydrogen economy. A companion website provides additional material and enables students to watch experiments.