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16 Cards in this Set
- Front
- Back
- 3rd side (hint)
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The Atomic number |
The number of protons in an element. |
The number at the top of a periodic box. |
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The Atomic mass |
The average mass of all of the naturally occuring isotopes. |
The number that the bottom of a periodic box. |
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J.J. Thomson (1897) |
Determined that electrons are negatively charged and the charge to mass ratio. |
Cathode Ray Experiment |
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R.A. Millikan (1909) |
Determined the charge on an electron. q*e=mass*gravity |
The Oil Drop Experiment |
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Rutherford (1911) |
Determined that the nucleus of an atom is small and contains protons. |
Gold Foil Experiment |
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Carbonate |
(CO3)2- |
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Cyanide |
CN- |
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Hydroxide |
-OH |
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Nitrate |
(NO3)- |
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Phosphate |
(PO4)3- |
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Sulfate |
(SO4)2- |
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Permanganate |
(MnO4)- |
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Ammonium |
(NH4)+ |
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Diatomic Molecules |
Hydrogen, Nitrogen, Fluorine, Oxygen, Iodine, Chlorine, Bromine |
Have No Fear Of Ice Cold Beer |
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Convert grams to atoms |
Find molar mass of the whole molecule Convert grams to moles Find the moles of the element in question Find the number of atoms by multiplying by avogadros number |
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Stoichiometry |
Make sure the equation is balanced Find the molar mass of molecule with known amount Convert grams to moles by using molar mass Multiply moles by ratio of known to unknown Convert moles to grams |
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