7th

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Grade 7 Acids and Bases

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  • 1. Multiple Choice
    1 minute
    1 pt
    Which of the following word pairs correctly completes the sentence below?
    _______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.
    Acids; pH less than 7
    Acids; pH greater than 7
    Bases; pH greater than 7
    Bases; pH less than 7
  • 2. Multiple Choice
    1 minute
    1 pt
    The esophagus is the tube that connects the mouth to the stomach. Heartburn occurs when some of the stomach juices flow backwards up the esophagus. To help relieve heartburn, a person should take medicine that is
    neutral
    basic

    acidic or basic.
    acidic
  • 3. Multiple Choice
    1 minute
    1 pt
    If an acid is combined with a base of equal strength, the result will most likely be
    a neutral solution.
    a stronger acid.
    impossible to tell without testing the pH.
    a stronger base
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