Fundamentals of Chemistry, Third Edition introduces the reader to the fundamentals of chemistry, including the properties of gases, atomic and molecular weights, and the first and second laws of thermodynamics. Chemical equations and chemical arithmetic are also discussed, along with the structure of atoms, chemical periodicity, types of chemical bonds, and condensed states of matter. This book is comprised of 26 chapters and begins with a historical overview of chemistry and some terms which are part of the language of chemists. Separation and purification are covered in the first chapter, while the following chapters focus on atomic and molecular weights, stoichiometry, the structure of atoms, and types of chemical bonds. The molecular orbital (MO) theory of bonding, galvanic cells, and chemical thermodynamics are considered next. Separate chapters are devoted to MO theory of covalent and metallic bonding; orbital hybridization; intermolecular forces; acids and bases; ionic equilibrium calculations; and polymers and biochemicals. This monograph is intended for chemistry students.