| A | B |
|---|
| S.I. System | international system of measurement based on metric system |
| Liter | the SI unit of measure for volume |
| Meter | the SI unit of measure for length/distance |
| Gram | the SI unit of measure for mass |
| Weight | measure of the force of gravity acting on a mass |
| Intensive | physical properties that do NOT depend on the amount of the substance present |
| Extensive | physical properties that depend on the amount of the substance present |
| Matter | anything that has mass and takes up space |
| Pure substance | substance that can NOT be broken down by physical means; elements and compunds |
| Element | pure substance that can NOT be broken down by chemical means |
| Compound | a pure substance consisting of two or more elements chemically combined |
| Mixture | two or more pure substances physically combined; can be separated by physical means |
| Heterogeneous Mixture | a mixture that does NOT have uniform composition throughout |
| Homogeneous Mixture | a mixture that has uniform composition throughout |
| Filtration | technique used to separate components of a homogeneous mixture; used to separate solid from liquid |
| Distillation | technique used to separate components of a homogeneous mixture/solution based on different boiling points |
| Chromotography | technique used to separate components of a homogeneous mixture/solution based on solubility and size |
| Density | the amount of matter in a given volume; ratio of mass to volume |
| Accuracy | how close a measurement is to an accepted value |
| Precision | how close a groups of results are to one another |
| Significant Figures | measured digits used to maintain proper accuracy |
