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Famous People in Chemestry

Anna Jackson & Alexis Dethmann

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Across
8.4 laws about elements created by Dalton (2 Words)
9.discovered 3 types of particles: alpha, omega, and gamma (2 Words)
Down
1.determined the charge on the electron in 1909 (2 Words)
2.discovered the neutrons in 1932 (2 Words)
3.also studied radioactivity (4 Words)
4.discovered the negitive charge of the electrons and measured the charge to mass ratio of the electron (2 Words)
5.ancient greek philospher- proposed the idea of an atom
6.first discovered radioactivity (2 Words)
7.ancient greek philosopher- proposed all matter is made up of 4 elements : fire, water, air, earth

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