| A | B |
| hydrogen bond | the attraction between a hydrogen atom with a partial postitive charge and another atom with a partial negative charge |
| cohesion | attraction between molecules of the same substance |
| adhesion | attraction between molecules of different substances |
| heat capacity | amount of heat energy required to increase its temperature |
| mixture | material composed of two or more elements or compounds |
| solution | all components are evenly distributed |
| solute | the substance that is dissolved |
| solvent | the substance in which the solved dissolves |
| suspension | mixture of water and non dissolved materials |
| pH scale | measurement system that indicates the concentration of H+ ions in a solution |
| acid | any solution that forms H+ ions in solution |
| base | a compound that produces hydroxide (OH-) ions in solution |
| buffer | weak acids or bases that can react with strong acids or bases to prevent sudden changes in pH |