| A | B |
|---|
| physical property | observations that do not change matter |
| chemical property | describe a substances ability to change into a new substance |
| phase | A state of matter |
| nucleus | Center of the atom |
| proton | + subatomic particle |
| neutron | neutral subatomic particle |
| electron | - subatomic particle |
| energy level | path and orbit of an electron |
| atomic number | # of protons in an atom |
| mass number | # of protons and neutrons in an atom |
| atom | the basic unit of matter |
| element | Matter consisting of only one type of atom |
| isotope | Same # of protons but different # of neutrons in an atom |
| compound | combination of two different atoms into a new substance |
| chemical bonding | Interactions of individual atoms to form compounds |
| ionic bond | Bond formed by a transfer of electron(s) |
| ion | Charged particle |
| covalent bonding | Bond formed by the sharing of electrons |
| molecule | The resulting unit of a COVALENT bond |
| chemical reaction | The process of a chemical change |
