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25 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Nucleus
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the center of an atom
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Electron Shell
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l outside part of an atom
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Proton
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a subatomic particle with a positive charge
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Neutron
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a subatomic particle with a neutral charge
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Electron
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asubatomic particle with a negative charge
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Mass #
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protons plus the neutrons
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Atomic #
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the number of protons
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Metal
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solid material
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hand
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Nonmetal
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an element or substance that is not a metal
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Metalloid
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an element whose properties are intermediate between those of metals and nonmetals and electrical semiconductors
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RadioActivity
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result of nuclear instability
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nucleus
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AMU
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mass of one nucleon
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Isotope
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has a wide range of # of neutrons
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Group
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column of elements in P.T.E
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Period
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Horizontal row in P.T.E
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Valence Electrons
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an electron in one of the outer shells of an atom that can participate in forming chemical bonds with other atoms
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Reactivity
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the rate at which a chemical substance tends to undergo a chemical reaction
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Orbitals
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mathematical function
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Bohr Model
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to show the structure of an atom
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Valence #
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combining power of an element
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Alkali Metals
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elements found in group 1 on P.T.E
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Alkaline Earth Metals
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six chemical elements
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column (group 2) of the P.T.E
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Transition Metals
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metals elements that serve as a bridge
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Halogens
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a group in the periodic table consisting of five chemically related elements
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Noble Gases
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any of the seven chemical elements that make up Group 18 of the P.T.E
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