| A | B |
|---|
| mass | measures the amount of matter |
| weight | measures the force of gravity on an object |
| heterogeneous | non-uniform distribution of the components in a mixture |
| chemical change | results in a new substance being formed |
| physical properties | characteristics of a substance that can be observed without altering the composition of the substance |
| matter | anything that has mass and occupies space |
| density | mass per unit volume |
| law | observed behavior with no lknown exception |
| theory | explanation of observed behavior |
| accuracy | how close lab data is to a true or accepted value |
| precision | agreement amoung a set of data |
| qualitative | descriptive data |
| exothermic | heat is produced |
| endothermic | heat is consumed |
| potential energy | energy of position |
| volume | measures the amount of space an object occupies |
| intensive physical properties | independent of the amount of matter |
| element | can not be seperated by chemical or physical means into two or more different substances |
| mixture | two or more components physically united |
| compound | two or more types of atoms chemically united |
