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5 Cards in this Set
- Front
- Back
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nucleus
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the dense, charges mass located the center of an atom
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proton
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a positively charged subatamic particle that is found in the nucleus of an atom
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electron
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a negarively charged subatamic particle that is found in the space outside
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neutron
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a neutral subatamic particle that is found in the nucleus of an atom
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atomic number
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a unique number for each element that equals the number of protons in an atom of that element
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