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Unformatted text preview: Lecture 44 Liquids I. The Nature of Liquids A. A Model for Liquids 1. Kinetic molecular theory suggests particles have kinetic energy. B. Liquids are fluids 1. Substances that can flow and therefore take the shape of their container C. Liquids have a definite volume D. Liquids have Relatively High Density 1. 10% less dense than solids (average) a) Water is an exception 2. 1000 times denser than gases E. Liquids are Relatively Incompressible 1. The volume of liquids doesn't change appreciably when pressure is applied F. Liquids have the Ability to Diffuse 1. Liquids diffuse and mix with other liquids 2. Rate of diffusion increases with temperature (temperature is defined as average Kinetic Energy) 3. Rate of diffusion increases with stirring G. Evaporation and Boiling 1. Evaporation a) Molecules with sufficient kinetic energy escape as vapor from the surface of the...
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