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Law of Conservation of Mass

Quiz by Susan Coffey

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5 questions
Show answers
  • Q1
    What is the definition of chemical reaction?
    a system where none of the reactants or products are allowed to escape
    The input which reacts chemically to create product
    occurs when the atoms and molecules of two or more substances rearrange to form new substances
    45s
  • Q2
    The law of conservation of mass states that matter cannot be created nor __________________.
    transferred
    destroyed
    rearranged
    45s
  • Q3
    A __________________ chemical equation shows that the same number of atoms in the reactants are also in the product.
    balanced
    rearranged
    transferred
    45s
  • Q4
    In a closed system, a chemical reaction takes place. The mass of the reactants in the beginning of the reaction is 25g. What does the mass have to be in the end of the reaction in order to follow the law of conservation of mass?
    30g
    25g
    15g
    45s
  • Q5
    There are two reactants in a chemical equation, and one product. The mass of the product is 30g. The mass of the first reactant is 17g. What must the mass of the second reactant be, if the equation is to follow the law of conservation of mass?
    23g
    13g
    47g
    45s

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