Alymcnamee Crossword
         
         
         
         
         
         
         
         
         
 
 
Down: 1) subatomic particle with a single unit of negative electric charge.2) subatomic particle that has no charge.3) substance containing two or more elements chemically combined in a fixed ration. Across: 1) pure substance that cannot be broken down into other substances by chemical or physical means.4) smallest particle of an element.5) subatomic particle with a single unit of positive electric charge
 

 

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