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AP Biology: Chap. 3
Vocabulary Terms & Definitions for AP Biology 12th Edition Chapter 3
Term | Definition |
---|---|
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 |