| A | B |
|---|
| Electrolysis | splitting a molecule into pieces using electricity |
| Experimental error | the difference between expected and actual results in an experiment |
| peer review | scientists look at each others' work to make sure it seems correct |
| cold fusion | thought to be proven true, but was disproven by peer review |
| polar molecule | a molecule with a positive and a negative end |
| nonpolar molecule | a molecule with a perfectly balanced charge (no positive or negative sides) |
| solvent | a liquid that dissolves other substances |
| solute | a substance that is dissolved in a solvent |
| ionic compound | a very polar molecule, e.g. salt |
| hydrogen bonding | H and O atoms being attracted to each other in adjacent molecules |
| cohesion | individual molecules are attracted to each other |
| surface tension | caused by cohesion, water sticking to itself at the surface |
| adhesion | a liquid sticking to its container |
| hard water | water with ions dissolved in it, like calcium or magnesium |
