1) Shows the number of atoms of each element in a compound a) coefficient b) subscript c) superscript 2) Elements on the right side of the arrow in a chemical reaction a) reactants b) products c) subscript 3) The only thing that can be changed when balancing an equation a) subscript b) coefficient c) product 4) ___ Al + ___ O2   → ____  Al2O3 a) 2, 2, 3 b) 4, 3, 2 c) 4, 2, 2 5) ____ HgO → ___ Hg + ___ O2 a) 2, 2, 1 b) 2, 2, 2, c) 2, 1,,2 6) One or more substances change to form one or more new substances a) chemical formula b) chemical equation c) chemical reaction 7) matter can be neither created nor destroyed a) Law of Conservation of Matter b) Law of Conservation of Chemicals c) Law of Conservation of Math 8) NH3 is a  a) chemical equation b) chemical composition c) chemical formula 9) indicate the number of atoms of the element  a) product b) subscript c) coefficient 10) 2H2+O2 → 2H2O is a example of a  a) chemical equation b) chemical formula c) chemical problem

Balance Chemical Equations Review 10 Questions

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