| A | B |
|---|
| mass number | = protons + neutrons |
| atomic number | = protons |
| isotope | atoms of same element with different mass numbers |
| homozygous mixture | solution |
| density | mass / volume |
| ion | electrically charged atom |
| atom | basic unit of matter |
| element | a sample of identical atoms |
| molecule | smallest piece of compound |
| neutron number | mass number - protons |
| subatomic particles | electron, proton, neutron |
| plasma | state most common in universe |
| solid | high density, shape, no moving |
| liquid | no shape, more moving |
| gas | no shape, fills container |
| compound | chemically combined atoms |
| mixture | physically combined atoms |
| chemical properties | how a substance will react |
| physical properties | can observe without changing substance - density, shape, color... |
| matter | anything that takes us space and has mass |
