Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
10th April 2026
- 1Alkanes, Alkenes and Crude Oil
State the type of reaction that occurs when bromine adds across the double bond of an alkene.
- 2Alcohols, Carboxylic Acids and Polymers
Name the two methods used to produce ethanol industrially.
- 3Chemical Analysis
State the difference between a pure substance and a formulation.
- 4Tests 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.
- 5Chromatography and Instrumental Analysis
Explain why the baseline is drawn in pencil rather than ink.
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