Physical Chemistry seeks to explain chemical processes in terms of energy changes and the molecular nature of matter. This course introduces quantum mechanics and its role in determining the energies of atoms and molecules, followed by the laws of thermodynamics and their applications in chemistry, then links the two approaches with an introduction to statistical thermodynamics. The applications of thermodynamics to electrochemical processes are described, along with examples of practical importance in the areas of corrosion and the electrochemical cells. To complete the physical basis for understanding chemical reactions the factors affecting reaction rates, the role of reaction mechanisms, and molecular theory of reaction rates are described.