Daily Practice

GCSE Science

23rd August 1992

5 questions · GCSE · 584 questions in this band

1
Tests for Ions, Gases and Flame Tests
A solution gives a cream precipitate when acidified with dilute nitric acid and then treated with silver nitrate solution. Name the halide ion present.
2
Chromatography and Instrumental Analysis
Explain why the baseline is drawn in pencil rather than ink.
3
Chemistry of the Atmosphere
Name three greenhouse gases.
4
The Atmosphere: Evolution and Greenhouse Gases
Explain, in terms of gas molecules, why methane and water vapour, as well as carbon dioxide, are described as greenhouse gases.
5
Climate Change and Atmospheric Pollutants
Explain why burning a fuel can produce nitrogen oxides even if the fuel itself contains no nitrogen.

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