It includes both chemical and physical approaches to the properties of solids, and clearly separates those aspects of materials properties that can be tackled with classical physics from those that require quantum mechanics. aeo Quantum mechanics are introduced later to allow readers to be familiar with some of the mathematics necessary for quantum mechanics before being exposed to its bewildering fundamental concepts. aeo Discusses the electronic properties of solids from the viewpoint of elementary band theory, and end with a brief treatment of semiconductors and some semiconducting devices.