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24 Cards in this Set
- Front
- Back
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difference between U235 and U238 |
U235 is used for nueclear weapons and U238 is useless; their electrons |
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isotopes |
atoms where nuclei have the same # of protons but different number of neutrons |
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atomic # |
number of protons in an atom |
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mass # |
atomic weight- average weight rounded off/ #of protons + neutrons |
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oxidation # |
number of electrons an atom can gain, lose, or share
(-) gain (+) lose |
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democritus |
named the atom |
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dalton |
atomic theory |
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thompson |
electron |
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heisenburg |
uncertainty principle |
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rutherford |
necleus (Gold foil expirement) |
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chadwick |
neutron |
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Schrodinger |
quantum mechanics |
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bacquerel |
radioactivity |
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bohr |
energy levels |
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ancient greece |
Believed there was 4 types of atoms
fire water earth air |
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daltons one flaw in his atomis theory |
atoms are invisible |
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three isotopes of hydrogen |
1/1 proterium 1/2 deuterium 1/3 triterium |
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an atom is primarily.. |
empty |
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principle |
size |
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subsidiary |
shape |
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magnetic |
how it's sitting |
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spin |
how it's spinning |
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what happens to excited electrons? |
they give off light |
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hunds rule... |
everybody gets one before anybody gets two |
