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Chapter 7 & 8 vocab
| Defenition | Term |
|---|---|
| is the smallest piece of an element that still represents that element. | Atom |
| particle with one negative charge | Electron |
| most of an atom's mass and positive charge is concentrated in a small area in the center of the atom. | Nucleus |
| is an atomic particle that has one positive charge. | Proton |
| is a neutral particle that exists in the nucleus of an atom. | Neutron |
| is an area around an atomic nucleus where an electron is most likely to be located. | Electron Cloud |
| number of protons in an atom of an element. | Atomic Number |
| are atoms of the same element that have different numbers of neutrons. | Isotopes |
| is the sum of the number of protons and neutrons in an atom. | Mass Number |
| is the average mass of the element's isotopes, weighted according to the abundance of each isotope. | Average Atomic Mass |
| is an atom that is no longer neutral because it has gained or lost electrons. | Ion |
Created by:
rviloria
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