The author's goal in writing this book is to deliver the depth of coverage faculty want with the accessibility and clarity that students need for success. Nivaldo J. Tro's Chemistry: A Molecular Approach, Second Edition explains difficult chemical concepts in a concise and clear student-centered manner while also providing faculty with the flexibility to go more deeply into many key, often neglected, topics such as electron diffraction, molecular orbital theory, and free-energy changes under non-standard conditions. Chemistry is presented visually through multi-level images (macroscopic, molecular and symbolic representations), which helps students see the connections among the formulas (symbolic), the world around them (macroscopic), and the atoms and molecules that make up the world (molecular). Among other revisions, the Second Edition offers a crisp new design, adds more challenging problems, and significantly revises coverage of electrochemistry. Matter, Measurement, and Problem Solving; Atoms and Elements; Molecules, Compounds, and Chemical Equations; Chemical Quantities and Aqueous Reactions; Gases; Thermochemistry; The Quantum-Mechanical Model of the Atom; Periodic Properties of the Elements; Chemical Bonding I: Lewis Theory; Chemical Bonding II: Molecular Shapes, Valence Bond Theory, and Molecular Orbital Theory; Liquids, Solids, and Intermolecular Forces; Solutions; Chemical Kinetics; Chemical Equilibrium; Acids and Bases; Aqueous Ionic Equilibrium; Free Energy and Thermodynamics; Electrochemistry; Radioactivity and Nuclear Chemistry; Organic Chemistry; Biochemistry; Chemistry of the Nonmetals; Metals and Metallurgy; Transition Metals and Coordination Compounds. A comprehensive reference for chemistry professionals.