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Atomic Structure
Unit 1-Atomic Structure
| Term | Definition |
|---|---|
| atom | smallest particle of matter that retains the properties of the element |
| average atomic mass | the average mass of all the isotopes of an element |
| atomic number | equal to the number of protons; increases as you move left to right on the periodic table |
| Bohr model | shows the placement of all electrons on their respective energy levels |
| electron | particle found in the electron cloud with an electrical charge of -1 |
| electron cloud | region around the nucleus where electrons are most likely found |
| isotope | atoms of the same element with different numbers of neutrons |
| Lewis model | uses the element symbol and dots to represent the valence electrons |
| mass number | the sum of the protons and neutrons in the nucleus of an atom |
| neutron | neutral particle found in the nucleus with no electrical charge |
| nucleus | positively charged center of the atom |
| proton | particle found in the nucleus of an atom with a charge of +1 |
| valence electron | electrons in the outer energy level |
| subatomic particle | smaller particle that makes up the atom; proton, neutron, electron |
| ion | charged particle; an atom that has gained or lost electrons |
Created by:
vfenstermaker
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