Chemistry

9th

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Chemical Changes and Reactions

262

10 questions

  • 1. Multiple Choice
    10 seconds
    12 pts
    The substances at the beginning of a chemical equation are called the ____
    product
    yield
    chemical symbol
    reactants
  • 2. Multiple Choice
    10 seconds
    12 pts
    In the equation,          2Mg + O2 ---> 2MgO, which are the reactants?
    Mg and O
    MgO
    Mg and MgO
    O and MgO
  • 3. Multiple Choice
    10 seconds
    1 pt
    Image
    Which of the following models best demonstrates a balanced chemical equation?
    F
    G
    H
    J
  • Answer choices
    Tags
    Answer choices
    Tags