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chemistry 12 quiz

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alchemists believed all matter is made of a few basic substances
Aristotle thought earth, air, fire and water were elements
Democritus said all matter is made of atoms
Dimitri Mendeleev invented the periodic table of the elements
Ernest Rutherford said that atoms are mostly empty space
J. J. Thomson discovered the electron
Neils Bohr said electrons travel in fixed paths around the nucleus
Created by: boaz1
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