Solid state physics is concerned with the physical properties of solids, particularly the special properties exhibited by atoms and molecules because of their association in the solid phase. It is the study of the physical (e.g. the electrical, dielectric, magnetic, elastic, and thermal) properties of solids in terms of basic physical laws. In one sense, solid-state physics is more like Chemistry than some other branches of physics because it focuses on common properties of large classes of materials. It is typical that solid-state physics emphasizes how physical properties link to the electronic structure.