CHEM 1210 Chapter Notes - Chapter 12: Empirical Formula, Molecular Orbital Theory, Elastomer

• School: Ohio State University
• Department: Chemistry
• Course: CHEM 1210
• Professor: Kroner Steven

Document Summary

Metallic solids: held together by (cid:862)sea(cid:863) of shared valence electrons which conduct electricity. Ionic solids: held together by mutual electrostatic attraction between anions and cations. Electrical and mechanical properties are very different from metallic solids. Covalent-network solids: held together by network of covalent bonds. Polymers: contain long chains of atom where atoms within chain are connected by covalent bonds and adjacent chains are held to one another by weaker intermolecular forces. Stronger and have higher melting points than molecular solids. Nanomaterials: solids in which dimensions have been reduced. Crystalline solids: solids which have orderly, repeating pattern. Usually have flat surfaces that have definite angles. Unit cell: small repeating unit in crystalline solids made up of a unique arrangement of atoms. Structure of solid is determined by size and shape of unit cell and locations of atoms within it. Crystal lattice: the geometrical pattern of points on which the unit cells are arranged.