Science Vocabulary Quiz #2 Crossword
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
 
 
Down: 1) The number of protons and element possesses3) A substance that cannot be broken down by physical means4) Positively charged particle6) Negatively charged particle of an atom7) Vertical column of the periodic table Across: 1) Smallest particle of an element that retains the chemical properties of that element; consists of protons, neutrons and electrons2) Two or more atoms which have chemically combined5) An arrangement of elements in columns, ordered according to atomic numbers8) Horizontal row of the periodic table9) Uncharged particle of an atome10) Sum of protons and neutrons
 

 

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