Chemistry

9th

grade

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Atmosphere, The Greenhouse Effect and Tests for Gases

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28 questions

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  • 1. Multiple Choice
    10 seconds
    1 pt
    What is the percentage of oxygen in Earth's atmosphere?
    1%
    21%
    78%
    90%
  • 2. Multiple Choice
    10 seconds
    1 pt
    What percentage of our atmosphere is made up of other gases such as argon, water vapor, and carbon dioxide?
    1%
    21%
    78%
    90%
  • 3. Multiple Choice
    10 seconds
    1 pt

    The laboratory test for oxygen is that

    it relights a glowing splint

    it relights a burning splint

    it changes lime water to milky

    it makes a glowing splint go out

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