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23 Cards in this Set
- Front
- Back
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Cohension
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The bonding together of life molecules, often hydrogen bonds.
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Adhesion
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The attraction between different types of molecules.
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Surface tension
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A test of difficult it is to stretch or break the surface of a liquid. Water has a high surface tension because of the hydrogen bonding of surface molecules.
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Kinetic Energy
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The energy associated with the relative motion of objects. Matter can preform work by implanting motion to other matter.
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Heat
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The totaL amount of kinetic energy due to the random motion of atom molecules ina body of matter, Also called Thermal energy. ____ is energy in its most random form.
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Temperature
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A measure of the intensity of heat in degrees, reflecting the average kinetic energy of the molecules.
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Celsius scale
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A temperature scale (C) equal to 5/9(F-32)that measures the freezing point of heat energy required to raise the temperatire of water (1 g) by 1 C, also the amount of heat energy that 1G water releases when it cools.
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Calerie (Cal)
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Usually used to indicate the energy content of food
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Kilocalerie (Kcal)
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A thousand caleries, the amount of heat energy required to raise the temperature of 1 G water by 1 C.
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Specific heat
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The amount of heat that must be absorbed or lost for 1 g of substance to change its temperature by 1C.
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Heat of Vaporization
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The quantity of heat a liquid has to absorb or lose for 1g of substance to change its temperature by 1C.
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Evaporative Cooling
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The process in which the surface of an object becomes cooler during evaporation, owing to the change of the molecules with the greatest kinetic energy from the liquid to gaseous state.
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Solution
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A liquid that is a homeogeneous mixture of two or more substances
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Solvent
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The dissolving factor of a substance, ___ is the most common one.
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Solute
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A substance that is dissolved in a solution.
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Aqueous Solution
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A solution in which water is the solvent.
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Hydration shell
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The sphere of water molecukes around a dissolved ion.
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Hydrophillic
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Having an affinity with water.
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Colliod
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A mixture made up of water and molecules (that beacuse of their large size, tend to suspend thmeslves rather than dissolve.
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Hydrophobic
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Having an adhesion to water, tending to coalesce and form droplets in water.
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Molecular Mass
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The sum of the mass of all of the atoms in a molecule, also called ____ (molecular weight).
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Mole (Mol)
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The number of grams of a substance that equals its molecule weight in daltons and contains Alagatro's number of molecules.
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Molarity
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The number of moles of solute per liter of solution
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