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AP Biology: Chap. 3

Vocabulary Terms & Definitions for AP Biology 12th Edition Chapter 3

Cohesion hydrogen bonds that hold a substance together
Adhesion the clinging of one substance to another
Surface tension a measure of how difficult it is to stretch or break the surface of a liquid
Specific heat the amount of heat that must be absorbed or lost for 1 g of that substance to change its temperature by 1-degree C
Heat of vaporization the quantity of heat a liquid must absorb for 1 g of it to be converted from the liquid to the gaseous state
Evaporative cooling when a liquid evaporates, the surface of the liquid that remains behind cools down - this occurs because the "hottest" molecules, those with the greatest kinetic energy, are most likely to leave as gas
Solvent the dissolving agent of a solution
Solute the substance that is dissolved by the solvent
Aqueous solution a solution in which water is the solvent
Hydrophilic any substance that has an affinity (love) for water
Hydrophobic substances that are nonionic and nonpolar that seem to repel water
Base a substance that reduces the hydrogen ion concentration of a solution
Created by: CommanderJonno