| A | B |
|---|
| Matter | anything that has mass and takes up space |
| Atom | building blocks of matter made up of protons, neutrons, and electrons |
| Element | substances that are made up of only one type of atom |
| Proton | Positively charged particle found in the nucleus of an atom |
| Neutron | Neutral particle found in the nucleus of an atom |
| Electron | Negatively charged particle found in the nucleus of an atom |
| Atomic Number | The number of protons in the nucleus, |
| Mass Number | the number of protons plus neutrons in an atom |
| Isotope | atoms of the same element that have different numbers of neutron |
| Compound | matter that is made up of two or more elements and has chemical and physical properties different from each of the elements that make it up |
| Ion | electrically charged atoms; atom that has different numbers of protons from electrons |
| Mixture | describes two or more substances that retained their own properties even when they are combined and that can be separated by physical means |
| Heterogeneous Mixture | a mixture which is not mixed evenly and each component retains its own properties |
| Homogeneous Mixture | a mixture which is evenly mixed throughout |
| Solution | a kind of mixture in which |
| Density | a physical property of matter that can be determined by dividing the mass of an object by its volume. |
