| 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 |
| Mass | the amount of matter in a substance |
| Weight | measure fo the force of gracity 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 subtance present |
| Matter | anything that has mass and takes up space |
| Pure Substamce | substance that can Not be nroken down by physical means:elements and compounds |
| element | pure subtance that can NOT be broken down by chemical means |
| compound | a pure subtance consisting of two or more elements chemically combined |
| Mixture | two or more pure substances physically comnined; can be separated by phusical means |
| Heterogeneous mixture | a mixture that does NOT have unifor coposition throughout |
| Homogenous mixture | a micture that has uiniform composition throughout |
| Filtration | technque used to separate components of a hetergenous mixture?used to seperate solid from liquid |
| distillation | technique used to separate componets of a of a homogenous mixture /solution based on different boiling points |
| chromatography | technique used to separate components of a homogenous micture/solution based on solubility and sice |
| density | the amount of matter in a given colume; ration of mass to volume |
| Accuracy | how close a measurement is to and accepted value |
| precision | how close a group of results are to one another |
| significant figures | measured difits used to maintain proper accuracy |
