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4 Cards in this Set
- Front
- Back
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proton |
a subtomatic particle that has a positive charge and that is found in the neucleas of an atom |
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atomic number |
the number of protons in the neucleas pf an atom the atomic number is the same for al atoms of an element |
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neutron |
a subtomatic particle that has no change |
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atomic mass unit |
a unit of mass that describes the mass of an atom or molecule |
