1) 4 grams of hydrogen and 32 grams of oxygen will combine to form ______ of water. a) 36 grams b) 32 grams c) 28 grams d) 4 grams of water 2) When sodium and chlorine combine to form sodium chloride, sodium chloride is the: a) produce b) originator c) reactant d) product 3) The law of conservation of mass says substances can neither be _____________ nor ________________ . a) condensed / extracted b) created / destroyed c) built / torn down d) blended together / separated 4) Which of the chemical equations in the table correctly show the law of conservation of mass being preserved? a) I b) II c) III d) IV 5) Which of the following shows the Law of Conservation of Mass being preserved? a) b) c) 6) A Chemical reaction produces new substances by changing the way in which atoms are arranged. Does the following model show mass being conserved? a) yes b) no 7) The law of conservation of mass can be demonstrated by a chemical reaction. Which model best represents this law? a) b) c) d) 8) A student pours hydrochloric acid into an open beaker that contains a piece of magnesium. A chemical reaction occurs. The mass before the reaction was 5.73g. The mass after the reaction was 5.71g. Which statement BEST explains why the total mass before the reaction is different from the total mass after the reaction? a) it was a slow reaction b) a gas was produced c) a precipitate was produced d) the product was soluble

Conservation of Mass

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