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18 Cards in this Set
- Front
- Back
Relative Abundences when added together = ___
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1
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Average Atomic Mass=
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(Relative abundence (decimal form) X mass) + (relative abundence X Mass)
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relative abundence
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percent expressed as a decimal
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__
C |
___- mass number
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C
__ |
___- Atomic Number
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Isotopes have different # of ____
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neutrons
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amu
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atomic mass units
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How do you know if it's a neutral atom?
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If there is not positive or negative signs following the element symbol
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Mass #
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protons + neutrons
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# of neutrons
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Mass #- protons
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Rutherford
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Discovered atom nucleus
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Dalton
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Theorized an atom is indivisable
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Thomson
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Discoved electons
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Mass of neutron
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1.0067 amu
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mass of electron
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-24
9 x 10 amu |
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mass of proton
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1.0073 amu
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cathode
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negative electrode
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anthode
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positive electode
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