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9 Cards in this Set
- Front
- Back
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Formulas to find protons |
1. #p= atomic number 2. #p= MASS NUMBER - number of neutrons |
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Formula to find number of neutrons |
#n= MASS NUMBER - atomic number
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Formula for mass number of element |
MASS NUMBER= #neutrons + #protons |
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What changes in the atom if the number of protons change? |
It becomes a different element |
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What makes up most of the mass? |
Protons and neutrons |
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What in the atom defines the element? |
The number of protons |
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List the experiments and models each person created for the atom? |
Dalton- billiard ball J.j Thompson- plum pudding (cathode ray) Rutherford- nucleus model (gold foil) Bohers model |
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What are all atoms made of? |
Subatomic particles |
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Isotopes |
Different varieties of the same element with different numbers of neutrons |
