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Unit 2B

Properties of Water

TermDefinition
adhesion the ability of molecules of different substances to stick together
capillary action movement of water through very narrow tubes due to surface tension
cohesion the ability or tendency of molecules of the same substance to stick together
hydrogen bond a weak type of chemical bond between a hydrogen atom and another negatively charged atom, which may be in a different molecule
polarity the property of having a negatively charged end and a positively charged end (like magnets have a "+" and a "-" side)
surface tension the tension of the surface film of a liquid, caused by the cohesion of the molecules (they stick together!)
heat capacity amount of heat needed to raise the temperature of a substance by one degree; water has high heat capacity
tension the state of being stretched tight.
solvent a substance that is able to dissolve other substances; the larger part of a solution
universal solvent water is able to dissolve almost all other substances, given enough time
solute a substance that is getting dissolved; it is the smaller part of the solution; example: the salt in ocean water
capacity the maximum amount that something can contain
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