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chem 3
Atoms and molecules
| Term | Definition |
|---|---|
| Proton | 1 amu, pos charge, in the nucleus |
| Neutron | 1 amu, neutral charge, in the nucleus |
| Electron | small af, neg charge, outside of the nucleus |
| Atomic number | number of protons inside the nucleus |
| Isotope | atoms of the same element that differ because of the number of neutrons |
| Atomic weight | the general mass of all naturally occurring isotopes of a given element, taking into consideration the abundance of each isotope |
| Molecule | 2 or more non-metal atoms chemically combined in a definite proportion |
| Binary compound | compound made of only 2 elements |
| Ternary compound | compound made of only 3 elements |
| Quaternary compound | compound made of only 4 elements |
| Chemical formula | written version of a chemical compound, tells you what elements are present and in what proportion |