Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
- 1Alcohols, Carboxylic Acids and Polymers
Name the two methods used to produce ethanol industrially.
- 2Chemical Analysis
Which reagent is added, and in what colour change, to test for chlorine gas?
- 3Tests for Ions, Gases and Flame Tests
Why must dilute nitric acid be added before silver nitrate solution when testing for a halide ion?
- 4Chromatography and Instrumental Analysis
A sample produces only one spot when run in three different solvents. What does this suggest about the sample?
- 5Chemistry of the Atmosphere
Explain, in terms of infrared radiation, how greenhouse gases keep the Earth warm.
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Every sheet is deterministic: the same date always regenerates the same five questions. All of May 2004, including the monthly compilation PDF.