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Published byJulie Hardy Modified over 5 years ago

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Atomic Structure

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Atomic Number Found on the periodic table

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Atomic Mass Found on the periodic table Round to the 10ths place

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Mass Number If given, rewrite If not given, round the atomic mass to the nearest whole number

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Protons Atomic number on the periodic table

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Neutrons Mass # - atomic # = # neutrons

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Electrons Electrons have a negative charge More e- than p + = negative charge Less e- than p + = positive charge No charge = # p + Negative charge = # p + + charge Positive charge = # p + - charge

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Example N 15 7 +3 charge Mass number Atomic number

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Chart Element/ Ion Atomic Number Atomic Mass Mass Number ProtonsNeutronsElectrons N714.01578 (15-7) 4 (7-3) 15 7 +3

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THE END!!!

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