Chemistry

11th

grade

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law of conservation of mass

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20 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    Law of conservation of mass states that

    mass is created

    mass is destroyed

    mass is neither created nor destroyed

    mass does not change

  • 2. Multiple Choice
    2 minutes
    1 pt

    100g of white powder reacts with 77g of clear liquid. The reaction bubbles and changes color producing a yellow liquid that has a mass of 90g. What can be concluded?

    97g of gas was produced

    This experiment violates the conservation of mass

    87g of gas was produced

    The excess reactant is destroyed & disappears during the reaction

  • 3. Multiple Choice
    1 minute
    1 pt
    What are the REACTANTS :
    H2O + CO2 → HCO + HO
    H2O and CO2
    HCO and HO
    H2O ONLY
    HCO ONLY
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