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periodic table

terry bowles

easy way to learn the periodic table.

1 2
  3              
   
4                    
 
5                          
 
 
6 7            
    8
9                        
     
10                      
     
11              

Across
3.a subatomic particle that has a negative charge
4.the sum of the numbers of protons and neutrons in the nucleus of an atom
5.a region around the nucleus of an atom where electrons are likely to be found
7.is physical science, an atom`s central region, which is made up of protons and neutrons.
9.number of protons in a nucleus
10.the mass of an atom expressed in atomic mass units
11.particles of a nucleus that has no electrical charge
Down
1.the smallest unit of an element that maintains the properties of that element.
2.a unit of mass that describes the mass of an atom or molecule
6.atoms that has the same number of protons but have different number of neutrons
8.positive charged particles in a nucleus

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