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atom terms
| Term | Definition |
|---|---|
| model | a system or method used as an example to demonstrate an idea |
| atom | the basic smallest unit of a chemical element |
| nucleus | the positively charged centralcore of an atomcontaining neutrons and protons |
| proton | a stable subatomic particle in all atomic nuclei with a positive electric charge |
| neutron | a subatomic particle of about the same mass as a proton but without an electric charge |
| electron | a stable subatomic particle with a charge of negative electricity found in all atoms |
| atomic number | number of protons in the nucleus of an atom, determines the chemical properties of an element |
| subatomic particle | a particle smaller than an atom or cluster of such particles |
| nuclear symbol | the mass number and the atomic number of the isotope |
| molecule | a group of atoms bonded together smallest unit of a chemical compound |
| Lewis structures | diagrams that show bonding between atoms of a molecule and the lone pairs of electrons |
| Bohr model | electrons orbit the nucleus at set distances, changes orbits by quantam leap |
| electron shell | the electrons in the outermost occupied shell determine chemical partners of an atom |
| valence electron | electron associated with an atom that can participate in a formation of a chemical bond |
| matter | that which occupies space and possesses rest mass |
Created by:
eduardo chavez
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