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Daily Practice · GCSE Science

Daily Practice - GCSE Science

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18th February 1997

5 questions · GCSE · 584 questions in this band

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  1. 1
    Tests for Ions, Gases and Flame Tests

    Why must dilute nitric acid be added before silver nitrate solution when testing for a halide ion?

  2. 2
    Chromatography and Instrumental Analysis

    A sample produces only one spot when run in three different solvents. What does this suggest about the sample?

  3. 3
    Chemistry of the Atmosphere

    State the approximate percentage of nitrogen in today's atmosphere.

  4. 4
    The Atmosphere: Evolution and Greenhouse Gases

    State two long-term stores of carbon that removed carbon dioxide from the early atmosphere.

  5. 5
    Climate Change and Atmospheric Pollutants

    Explain how solid carbon particulates released by combustion can cause global dimming.

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