1) The Law of Conservation of Mass states that matter is neither created nor _____ during a chemical reaction. a) created b) destroyed c) made up d) dissolved 2) In a chemical equation, the mass of the reactants is _____ to the mass of the products. a) equal b) half c) not equal d) double 3) The substances on the _____ side of the arrow in a chemical equation are called the reactants. a) left b) right c) top d) bottom 4) The substances on the _____ side of the arrow in a chemical equation are called the products. a) left b) right c) top d) bottom 5) In the chemical equation 2H2 + O2 → 2H2O, H2 and O2 are the _____. a) products b) reactants c) coefficients d) subscripts 6) In the chemical equation 2H2 + O2 → 2H2O, H2O is the _____. a) product b) reactant c) coefficient d) subscript 7) Is this chemical equation balanced or unbalanced? P4 + 5O2 → P4O10 a) balanced b) unbalanced 8) Is this chemical equation balanced or unbalanced? Fe2O3 + CO → 2Fe + CO2 a) balanced b) unbalanced

Law of Conservation of Mass

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