Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
6th January 2025
- 1Alcohols, Carboxylic Acids and Polymers
State the functional group found in all alcohols.
- 2Chemical Analysis
State the difference between a pure substance and a formulation.
- 3Tests 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.
- 4Chromatography and Instrumental Analysis
Explain why the baseline is drawn in pencil rather than ink.
- 5Chemistry of the Atmosphere
Give two processes that removed carbon dioxide from the early atmosphere.
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