| A | B |
| H2O | chemical formula for water |
| polar molecule | molecule with different electric charges at each end |
| surface tension | tightness of water surface |
| capillary action | force of attraction between water molecules and surrounding materials |
| solution | uniform substance formed by mixing one material in another |
| solvent | material that dissolves another material |
| solute | material that gets dissolved |
| melting | process of changing from a solid state to a liquid state by adding energy |
| freezing | process of changing from a liquid to a solid state by removing energy |
| boiling | process of changing from a liquid to a gaseous state by adding energy |
| condensation | process of changing from a gaseous state to a liquid state by removing energy |
| evaporation | process where surface molecules have enough energy to escape into a gaseous state |
| density | mass divided by volume |
| density of pure water | 1 gram per mL |
| specifc heat | amount of heat required to raise a 1 gram of a substance by 1 degree celsius |