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WHSCHEMIHISTORY

hannahc

WHSCHEMIHISTORY

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Across
2.Discovered positively charged "canal rays" using a modified cathode ray tube
7.Used the now famous "gold foil" experiment to prove the existence of the nucleus. He also showed most of an atom is empty space
8.Credited with the discovery of the electron and the "plum pudding" model of the atom
10.Credited with the "planetary" model of the atom that shows electrons orbiting the nucleus
Down
1.First to suggest the idea of atoms
3.Subatomic particle that has no charge
4.Atoms of the same element have the same number of protons but different number of neutrons
5.Credited with the development of an early atomic theory to explain the behavior of atoms
6.Credited with the discovery of the neutron
9.Subatomic particle located in the nucleus with a positive charge

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