Reviews atomic history and structure
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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| Democritus | named particles "atomos"
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| Dalton | developed atomic theory
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| Thomson | discovered electron
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| Rutherford | discovered nucleus
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| Bohr | planetary model
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| Chadwick | discovered neutron
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| electron cloud (quantum) model | current model
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| nucleus | protons and neutrons
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| protons | +1 charge
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| electrons | -1 charge
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| neutrons | 0 charge
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| atomic mass | protons + neutrons
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| atomic number | equal to protons
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| neutral atom | protons = electrons
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| number of electrons that can fit into first energy level | 2
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| number of electrons that can fit into second energy level | 8
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| valence electrons | located in outermost shell/energy level
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| Bohr diagram | shows ALL electrons
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| Lewis Structure (Dot) diagram | shows only VALENCE electrons
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| did gold foil experiment | Rutherford
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| did cathode ray experiment | Thomson
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
dfwingfield
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