| A | B |
|---|
| kilometer | one of these contains 1000 meters |
| decigram | 1 gram contains 10 of these |
| centimeter | one meter contains 100 of these |
| milliliter | one liter contains 1000 of these |
| SI | internationally accepted units of measurements |
| density | a substance's ratio of mass to volume |
| physical properties | properties that can be observed without changing the identity of the matter |
| chemical properties | properties that can only be observed when the identity of the matter changes |
| physical change | a change that alters the properties but not the identity of a substance |
| chemical change | a change that alters the molecular identity of a substance |
| mixture | a physical blend of two or more different substances |
| pure substance | contains a single type of chemical or substance |
| heterogeneous | describes a mixture that has more than one visible phase or part |
| homogeneous | a mixture with a single visible part |
| element | a pure substance that contains only one type of atom |
| compound | a pure substance that contains only one molecule (or combination of atoms) |
| temperature | a measure of the average kinetic energy of the molecules in a substance |
| erode | to wear away |
| condense | to change from a gas to a liquid |
| distill | to separate a mixture based on boiling |
| oxidize | to chemically combine with oxygen |
| rust | to oxidize |
| petrify | to replace living materials with minerals |
| electrolysis | to separate a compound into elements using electricity |
