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Chapter 11 Crossword Puzzle

DeJon Matthews

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10   11                  
           
  12        
13                          
         
       
    14          
   
  15                  

Across
1.The mass of an atom
3.A region where electrons are likely to be found
4.A negatively charged particle
6.Developed an atomic theory in the 1700's
11.The philosopher was named the atom
13.The sum of protons and neutrons in the nucleus of an atom
14.A postively charged particle found in the nucleus of an atom
15.Tested Thomson's theory
Down
2.The number of protons in the nucleus of an atom
5.The philosopher was rejected the idea of the atom
7.Smallest unit of an element
8.An atom's central region
9.A Danish scientist
10.Discoveried a mistake in Dalton's theory
12.An atom with the same number of protons but different number of neutrons

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