According to the law of conservation of matter, we know that the total number of atoms does not change in a chemical reaction and thus mass is conserved. This
is part of a chemical reaction: hydrogen plus  oxygen yields water. Can you complete this model? Reorganize the reactants in order to complete the product side
of the reaction
Your answer:
There is another answer choice with 4 reactants 
                                             
                                          
                                          
                                        
											 
			                  