The study of macroscopic and microscopic phenomena throughout chemical systems in terms of the principles, practices, and concepts of physics such as motion, energy. force, thermodynamics, time, quantum chemistry, statistical mechanics, analytical dynamics, and chemical equilibria is what is referred to as the field of physical chemistry. Physical chemistry is a subfield of analytical chemistry. This book will explain the fundamentals of physical chemistry as well as the phenomena that it studies. The book demonstrates, with the help of a limited number of formulae, how the field of physical chemistry derives its concepts from the fields of physics, quantum mechanics, or mathematics, and how these fields have all contributed to our comprehension of the natural world. The theoretical underpinnings of chemistry are laid forth by the discipline of physical chemistry. In physics, it is only able to go as high as its knees, but in organic and inorganic chemistry, the other two primary subfields of chemistry, it can reach its head. The book “Physical Chemistry” is often used as a text for students just starting in the field of physical chemistry. The book wide variety of topics, including chemical bonding, wave mechanics, molecular spectroscopy, ideal and nonideal gases, the three laws of thermodynamics, thermochemistry, and solutions for nonelectrolytes. Further included are the kinetics of gas-phase processes, colloids and macromolecules, muclear chemistry, and radiochemistry.