Instant Notes in Chemistry for Biologists is a concise book for undergraduates who have a limited background in chemistry. This book covers the main concepts in chemistry, provides simple explanations of chemical terminology, and illustrates underlying principles and phenomena in the life sciences with clear biological examples. Building on the success of the first edition, the second edition has been fully revised and updated and comprises new sections on water as a biological solvent, inorganic molecules and biological macromolecules.