Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products. "Common Chemical Reactions" is a comprehensive book that describes basic concepts about the conservation of matter and patterns to write chemical reactions. The book encloses details about different types of reactions such as combination reactions, decomposition reactions, combustion reactions, acid-base neutralization reactions, redox reactions, and replacement reactions. This book describes basic concepts of reaction kinetics, parameters for measuring the progress of chemical reactions, and variables that affect reaction rates. This book is a perfect combination of knowledge and examples about different types of reactions.