CHY 102 Study Guide - Final Guide: Intermolecular Force, Metal, Covalent Bond
8 Oct 2017
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Document Summary
The structure and properties of solids: there are 4 types of solids, ionic crystals, metallic crystals, molecular crystals, covalent network crystals. Ionic crystals: ionic crystals are solids in which positive and negative ions arrange in a crystal lattice structure, with alternating packing of the positive and negative ions. They also conduct electricity but only in solution or in the liquid state. Other properties of ionic crystals: hard, high melting points. Metals have a low ionization energy and easily give up electrons. The metallic ions pack together as closely as possible and are held in place because of strong electrostatic forces between the ions and the delocalized electrons. Properties of metallic crystals: melting points vary widely. Molecular crystals: molecular crystals are solids composed of individual molecules held together by intermolecular forces of attraction. Covalent network crystals: a covalent network crystal is a solid in which the atoms form covalent bonds in an interwoven network.
