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Science, Chemistry

10th -

12thgrade

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Law of Conservation

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15 questions

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  • 1. Multiple Choice
    2 minutes
    12 pts
    What is the Law of Conservation of mass?
    Mass is created in a chemical reaction
    Mass is created in a physical change
    New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
    Mass is never created or destroyed
  • 2. Multiple Choice
    1 minute
    1 pt
    In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams does reactant B should have? 
    4g
    5g
    9g
    14g
  • 3. Multiple Choice
    45 seconds
    1 pt
    Matter can not be created nor destroyed: it can only be
    Destroyed a little bit
    Invisible
    Transformed, changed
    None of the above
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