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WHSCHEMIHISTORY

beverlyb

WHSCHEMIHISTORY

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Across
4.developed what is known as the "planetary model".
7.observed rays traveling in the opposite direction of the cathode ray. called this ray the "canal rays".
8.confirmed the existence of the neutron
9.first to suggest the idea of atoms
10.the number made up by adding the protons and neutrons of an atom (2 Words)
Down
1.part of the atom that houses the protons and neutrons.
2.believed electrons existed in all atoms. created the "plum pudding" model
3.english chemist and phycicist that stated his atomic theory
5.discovered the nucleus, "gold foil" experiment.
6.term used to describe the number of protons in an atom (2 Words)

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