Intermolecular Force1 - expand to fill its container • If...

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Intermolecular Forces The Kinetic-Molecular Description of Liquids and Solids The physical properties of a substance depends upon its physical state. Water vapor, liquid water and ice all have the same chemical properties, but their physical properties are considerably different. Covalent bonds determine molecular shape bond energies chemical properties Intermolecular forces (non-covalent bonds) influence physical properties of liquids and solids The Kinetic-Molecular Description of Liquids and Solids Gases A collection of widely separated molecules The kinetic energy of the molecules is greater than any attractive forces between the molecules The lack of any significant attractive force between molecules allows a gas to
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Unformatted text preview: expand to fill its container • If attractive forces become large enough, then the gases exhibit non-ideal behavior Liquids • The intermolecular attractive forces are strong enough to hold molecules close together • Liquids are more dense and less compressible than gasses • Liquids have a definite volume, independent of the size and shape of their container • The attractive forces are not strong enough, however, to keep neighboring molecules in a fixed position and molecules are free to move past or slide over one another Thus, liquids can be poured and assume the shape of their containers...
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This note was uploaded on 11/22/2011 for the course CHEMISTRY CHM1025 taught by Professor Laurachoudry during the Fall '10 term at Broward College.

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