polar molecule - molecule in which one side of the molecule is slightly negative and the opposite side is slightly positive, hydrogen bond - weak attraction between a hydrogen atom and another atom, cohesion - Attraction between molecules of the same substance, adhesion - force of attraction between different kinds of molecules, heat capacity (specific heat) - the amount of heat needed to increase the temperature of an object exactly 1°C, capillary action - tendency of water to rise in a thin tube, surface tension - A measure of how difficult it is to stretch or break the surface of a liquid, solution - A mixture that forms when one substance dissolves another., solute - A substance that is dissolved in a solution., solvent - the substance in which the solute dissolves, suspension - mixtures of water and non dissolved material, pH scale - scale with values from 0 to 14, used to measure the concentration of H+ ions in a solution; a pH of 0 to 7 is acidic, a pH of 7 is neutral, and a pH of 7 to 14 is basic, acid - compound that forms hydrogen ions (H+) in solution; a solution with a pH of less than 7, base - a compound that produces hydroxide ions in solution; a solution with a pH of greater than 7, buffer - compound that prevents sharp, sudden changes in pH,

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