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WHSCHEMIHISTORY

sarahc

WHSCHEMIHISTORY

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Across
1.Earliest idea of atoms
3.Discovered the neutron
4.Positively charged particle
5.Negatively charged particle
8.Discovered positively charged 'canal rays' using a cathode ray tube
9.Created the 'planetary model' of the atom
10.Developed an early atomic theory
Down
2.Used the 'gold foil' experiment to prove the existence of the nucleus
6.Discovered the electron and created the 'plum pudding' model
7.A particle with no charge

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