Daily Practice · GCSE Science

Daily Practice - GCSE Science

Biology, chemistry and physics recall, definition and calculation, drawn from every strand.

27th September 2021

5 questions · GCSE · 584 questions in this band

1
Chemical Analysis
Give one piece of evidence that a solid sample is impure, based on its melting behaviour.
2
Tests for Ions, Gases and Flame Tests
Describe the test, and the positive result, for ammonium ions.
3
Chromatography and Instrumental Analysis
Write the formula for calculating an Rf value.
4
Chemistry of the Atmosphere
Name three greenhouse gases.
5
The 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.

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