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Periodic ⚗puzzle

Warren davis

1 2
  3      
   
  4  
5               6
       
      7  
8        
         
9                  
       
  10                
   
11                          
   

Across
3.The weight of an atom
5.In the cloud of the atom and has a negative charge
9.The number of electron shells that are arranged in the same row
10.The elements before the arrow in the chemical reaction
11.The place that stores all the negative particles
Down
1.The heart of the atom
2.The number of electrons, located in the outermost shell
4.helps us understand the reaction of each element( in columns)
6.Found in the nucleus and has no charge
7.Found in the nucleus and positive
8.The ending to a chemical reaction is called

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