CHEM 1A Chapter Notes - Chapter 11: Electronic Band Structure, Dynamic Equilibrium, Phase Diagram
Document Summary
Chapter 11 - liquids, solids, and intermolecular forces (pp. Solids, liquids, and gases: a molecular comparison 484. Intermolecular forces: the forces that hold condensed states together 487. Intermolecular forces in action: surface tension, viscosity, and capil lary action 497. Crystalline solids: determining their structure by x-ray crystallography 518. Crystalline solids: unit cells and basic structures 520. Key concepts: solids, liquids, and intermolecular forces (11. 1, 11. 2, 11. 3) The forces that hold molecules or atoms together in a liquid or solid are intermolecular forces. The strength of the intermolecular forces in a substance determines its state. Dispersion forces are present in all elements and compounds; they arise from the fluctuations in electron distribution within atoms and molecules. These are the weakest intermolecular forces, but they are significant in molecules with high molar masses. Dipole dipole forces, generally stronger than dispersion forces, are present in all polar molecules.
