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WHSCHEMIHISTORY

byronl

WHSCHEMIHISTORY

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Across
2.Discovered positively charged "canal rays" using a modified cathode ray tube
6.Credited with the discovery of the electron and the "plum pudding" model of the atom
9.Used the now famous "gold foil" experiment to prove the existence of the nucleus
10.Subatomic particle located in the nucleus which has a positive charge
Down
1.Credited with the development of an early atomic theory to explain the behavior of atoms
3.Credited with the earliest idea of atoms existing
4.This part of the atom houses protons and neutrons
5.Credited with the "planetary" model of the atom that shows electrons orbiting the nucleus
7.Credited with the discovery of the neutron
8.Subatomic particle that has a negative charge and orbits the nucleus

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