A complete introduction to nuclear chemistry and physics, this book covers fundamental concepts, relevant mathematics, current applications, and health issues. The book discusses energetics, nuclear stability, radioactive decay, nuclear reactions, interactions of radiation with matter, detection methods, and safety measures, including monitoring and regulations. It explores applications in medicine, power generation, food safety, waste, and weapons. This book provides a much-needed textbook and resource for undergraduate students in science and engineering as well as those studying nuclear medicine and radiation therapy.