2Solids_and_Liquids - Water has high surface tension...

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Liquids and Solid s Liquids= intermolecular forces limit the range of motion of the molecules
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Characteristics Density and compressibility =density much higher than gas, with huge pressure can be compressed
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Characteristics Fluidity = less fluid than gas but has fluidity
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Characteristics Viscosity = measure of resistance to flow= determined by the intermolecular forces
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What does viscosity depend upon? How strong attractive forces? Size = if attractive forces are the same, then the larger the molecule will be less fluid. Long chained molecules will be slower (ex motor oils) Viscosity decreases with temperature= if you increase temperature, then intermolecular forces can be overcome
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Characteristics Surface Tension -= energy required to increase the surface area by a given amount= intermolecular forces are not equal on all particles and surface molecules are pulled together
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Surface Tension
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Unformatted text preview: Water has high surface tension Surfactants = compounds that lowers the surface tension Characteristics Capillary action= page399 Cohesion force of attraction between identical molecules Adhesion = force of attraction between molecules that are different Solids= intermolecular forces limit the motions of particles to vibrations Characteristics of Solids Density= most solids are more dense than liquids ( exception is water ---- why???) Characteristics Crystalline solids = molecules packed together in a typical manner Cell is the smallest unit Crystalline solids 3 major shapes = pg 400 simple cubic body centered cubic face centered cubic Crystalline solids Classes= copy and look at table on top of page 402 Solids that do not form crystals are called amorphous solids Assignment 3 Answer questions 17,18,19,20,21,22 page 403...
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This note was uploaded on 02/04/2010 for the course CH 301 taught by Professor Fakhreddine/lyon during the Fall '07 term at University of Texas at Austin.

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2Solids_and_Liquids - Water has high surface tension...

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