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Daily Practice

GCSE Science

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12th March 1981

5 questions · GCSE · 584 questions in this band

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  1. 1
    Tests for Ions, Gases and Flame Tests

    Describe the test, and the positive result, for ammonium ions.

  2. 2
    Chromatography and Instrumental Analysis

    Write the formula for calculating an Rf value.

  3. 3
    Chemistry of the Atmosphere

    Explain, in terms of infrared radiation, how greenhouse gases keep the Earth warm.

  4. 4
    The Atmosphere: Evolution and Greenhouse Gases

    Explain, in one sentence, why the oceans were able to form only after the early Earth had cooled.

  5. 5
    Climate Change and Atmospheric Pollutants

    Explain why carbon monoxide is dangerous even though it has no smell.

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