QUIZ: Most Can’t Pass This Basic Science Test
Which of these particles make up an atom?
        
                                            
                    
                        
                        
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                    Atoms are the smallest unit of ordinary matter in a chemical element. Electrons have a negative electrical charge, protons have a positive charge, and neutrons are neutral, with no charge.
			    
                    
        
        Which of these particles make up an atom?
- Protons and neutrons
 - Electrons, neutrons, and protons
 - Protons and electrons
 - Electrons and neutrons
 
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