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10 Cards in this Set
- Front
- Back
Proton
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Is a positively charged subatomic particle that is found in the nucleus of an atom.
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Electron
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Is a negatively charged subatomic particle that is found in the space outside the nucleus.
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Neutron
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Is a neutral subatomic particle that is found in the nucleus of an atom.
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Atomic Number
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Equals the number of proton is an atom of that element.
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Mass Number
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Sum of protons and neutrons in the nucleus of that atom.
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Isotopes
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Atoms of the same element that have different numbers of neutrons and different mass numbers.
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Energy levels
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Possible energies that electrons in an atom can have.
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Electron Cloud
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A visual model of the most likely locations for electrons in an atom.
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Period
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Row in a periodic table of elements
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Group
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A column of elements in a periodic table
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