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Periodic Table Crossword

1 2 3 4
  5           6            
       
7                            
       
8     9              
    10  
11 12                
     
    13          
14       15              
    16              
       
  17                      
     
18          
   
19              

Across
5.another name for group
6.group 17 or 7A
7.what amu is the symbol for (3 Words)
8.an atom or a group of atoms that has lost or gained one or more electrons and therefore has a net electric charge
9.a horizontal row of elements in the periodic table
12.a negatively charged subatomic particle found in the energy level of an atom
13.group 1 or 1A
14.the total number of protons and neutrons in the nucleus of an atom (2 Words)
16.any atoms having the same number of protons but a different number of neutrons
17.the number of protons in the nucleus of an atom (2 Words)
18.a vertical column of elements in the periodic table
19.group 18 or 8A (2 Words)
Down
1.a positively charged subatomic particle in the nucleus of an atom
2.group 2 or 2A (3 Words)
3.ion with a positive charge
4.a neutral subatomic particle in the nucleus of an atom
10.group 16 or 6A
11.the smallest particle that has the properties of an element
13.an ion with a negative charge
15.the center of an atom; made up of protons and neutrons

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