| Term | Definition |
| solution | a liquid that is a homogeneous mixture of substances |
| solvent | a dissolving agent in a solution |
| solute | is the substance that is dissolved |
| aqueous solution | solution in which water is the solvent |
| 70-90% | Cell composition |
| cohesive behavior | water property |
| moderate temperature | water property |
| expand freezing | water property |
| versatile solvent | water property |
| surface tension | measures how hard it is to break water |
| kinetic energy | energy of motion |
| heat | energy from kinetic energy |
| temperature | rate of heat |
| calorie | the amount of heat required to raise the temp of 1g of water by 1C |
| heat absorbed | hydrogen bonds break |
| heat released | hydrogen bonds form |
| heat of vaporization | the heat a liquid must absorb for 1g to convert to gas |
| hydration shell | when an ionic compound is dissolved in water each ion is surrounded by a sphere of water |
| hydrophilic | loves water |
| hydrophobic | hates water |
| acid | a substance that increases the H+ concentration of a solution |
| base | any substance that reduces the H+ concentration of a solution |
| pH | pH = -log[H+] |
| acidic solution | pH values less than 7 |
| basic solution | pH values greater than 7 |
| buffers | substances that minimize changes in concentration of H+ and OH- in a solution |