Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
27th April 2026
- 1Tests 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.
- 2Chromatography and Instrumental Analysis
Explain why the solvent level in the container must be below the pencil baseline.
- 3Chemistry of the Atmosphere
Name three greenhouse gases.
- 4The 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.
- 5Climate Change and Atmospheric Pollutants
State the two products of the complete combustion of a hydrocarbon fuel.
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