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19 Cards in this Set
- Front
- Back
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POLAR MOLECULE
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a molecule with opposite charges on opposite sides
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COHESION
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the binding together of like molecules often by hydrogen bonds
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ADHESION
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the clinging of one substance to another
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surface tension
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a measure of how difficult it is to stretch of break the surface of a liquid
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KINETIC ENERGY
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the energy of motion
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HEAT
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a measure of the total amount of kinetic energy due to molecular motion in a body of matter
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TEMPERATURE
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measures the intensity of heat due to the average kinetic energy of the molecules
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SPECIFIC HEAT
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the amount of heat that must be absorbed or lost for 1 g of that substance to change its temp. by 1'C
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HEAT OF VAPORIZATION
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the quantity of heat a liquid must absorb for 1 g of it to be converted from the liquid to the gaseous state
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EVAPORATIVE COOLING
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the property of a liquid whereby the surface becomes cooler during evaporation owing to a loss of highly kinetic molecules to the gaseous state
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SOLUTION
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a mixture of two or more substances
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SOLVENT
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the dissolving agent of a solution
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SOLUTE
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THE SUBSTANCE THAT IS DISSOLVED
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HYDROPHOBIC
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substances that are nonionic and nonpolar actually seem to repel water
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ACID
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a substance that increase the hydrogen ion concentration of a solution
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BASE
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a substance that decrease the hydrogen ion concentration of a solution
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pH
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a measure of hydrogen ion concentration equal to -log[H+] and ranging in value from 0-14
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BUFFER
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a substance that minimize changes in the concentration of H+ and OH- in a solution
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ACID PRECIPITATION
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refers to rain fog snow with a pH lower or more acidic the pH 5.6
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