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Ch 3 Water

key terms

QuestionAnswer
Cohesion The binding together of like molecules,often by hdrogen bonds
Adhesion The attraction between different kinds of molecules
Specific Heat The amount of heat that must be absorbed or lost for 1 g of a substance to change its temperature by 1 degreee C.
Surface Tension A measure of how difficult it is to stretch or break the surface of a liquid. Water has a high surface tension because of the hydrgen bonding of surface molecules.
Heat of Vaporization The quantity of heat a liquid must absorb for 1g of it to be converted from a liquid to gas
Solution A liquid that is a homogeneous mixture of tow or more substances
Solute A substance that is dissoved in a solution
Solvent The dissolving agent of a solution. Water is the most versatile solvent known.
Aqueous A solution in which water is the solvent
Hydrophobic Molecule water-hating
Hydrophilic Molecule Water-loving
Acid A substance that increase the hydrogen ion concentration of a solution.
Base A substance that reduces the hydrogen ion concentration of a solution
pH A measure of hydrogen ion concentration equal to -log[H] and ranging in value form 0 to 14.
Buffer A substance that consists of acid and base forms in a solution and that minimizes changes in pH when extraneous acids or bases are added to the solution
Created by: gfry164
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