Solid-state chemistry is the study of the structures, properties, and reactions of materials in their solid state. It involves the investigation of materials such as metals, ceramics, semiconductors, and polymers. Synonyms for solid-state chemistry include solid-state physics, materials science, and condensed matter physics. Solid-state physics deals with the behavior of matter in the solid state at a fundamental level, including the study of the electronic, magnetic, and optical properties of materials. Materials science is a broader field that encompasses the study of the properties, fabrication, and design of materials. Condensed matter physics is similar to solid-state physics, but it also includes the study of liquids and other condensed phases of matter.