Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
12th June 2023
- 1Alcohols, Carboxylic Acids and Polymers
State what happens to the carbon-to-carbon double bond of an alkene monomer during addition polymerisation.
- 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
Name the two gases released in large amounts by volcanic activity that formed most of the Earth's early atmosphere.
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