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WHSCHEM1HISTORY

skyr

WHSCHEM1HISTORY

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  9                  
       
   
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Across
1.credited with the development of an early atomic theory to explain the behavior of atoms
3.credited with the planetary model of the atom that shows electrons orbiting the nucleus
5.credited with the discovery of the neutron
7.first to suggest the idea of atoms
9.showed most of an atom is empty space
10.housed the protons and neutrons
Down
2.the same as number of protons
4.discovered positively charged canal rays using a modified cathode ray tube
6.credited withe the discovery of the electron and the plum pudding model of he atom
8.atoms of the same element that had a different number of neutrons

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