history of atomic theiry. PT sections and group names
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Daltons therory | 1803 atoms but no structure
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| thomson therory | 1880 discovered electrons and said they had no order...cookie chips
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| rutherford therory | 1911 discovered nucleus
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| bohr therory | 1920 planetry modle
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| oxygen family/ group 16 | 4 below oxygen
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| noble gas | farthest collum under 0
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| carbon group | 4 under carbon
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| alkali metals | far left but not hydrogen
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| alkaline earth metals | colleum next to alkali metals
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| boron family | 4 under boron
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| nitrogen family | 4 under nitrogen
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| fluorine family | 4 under fluorine
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| Transitioning metals | middle and below
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| 1 base of centi | 100
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| 1 base of milli | 1000
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| 1 k base | 1000 base
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| 100cm | 1m
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| 1000mm | 1m
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| 1000m | 1km
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| 100cs | 1s
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| 1000ms | 1s
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| 1000s | 1ks
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| isotope | atoms of same element having different numbers
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