Daily Practice · GCSE Science

Daily Practice - GCSE Science

21st November 1994

5 questions · GCSE · 584 questions in this band

1
Tests for Ions, Gases and Flame Tests
Explain how the sodium hydroxide test distinguishes aluminium ions from calcium ions, given that both give a white precipitate.
2
Chromatography and Instrumental Analysis
Explain why the solvent level in the container must be below the pencil baseline.
3
Chemistry of the Atmosphere
Name the two gases released in large amounts by volcanic activity that formed most of the Earth's early atmosphere.
4
The Atmosphere: Evolution and Greenhouse Gases
Describe, in terms of wavelength, the difference between the radiation the Earth receives from the Sun and the radiation it re-emits from its surface.
5
Climate Change and Atmospheric Pollutants
State the two products of the complete combustion of a hydrocarbon fuel.

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