Daily Practice · GCSE Science

Daily Practice - GCSE Science

29th June 1997

5 questions · GCSE · 584 questions in this band

1
Chemical Analysis
Name the gas that relights a glowing splint.
2
Tests for Ions, Gases and Flame Tests
State the flame test colour for sodium ions.
3
Chromatography and Instrumental Analysis
State one advantage of running known reference substances alongside an unknown sample on the same chromatogram, rather than only comparing to published Rf values.
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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