Daily Practice · GCSE Science

Daily Practice - GCSE Science

28th July 1998

5 questions · GCSE · 584 questions in this band

1
Chromatography and Instrumental Analysis
In a chromatography experiment, a dye spot travels 4.5 cm and the solvent front travels 6.0 cm. Calculate its Rf value.
2
Chemistry of the Atmosphere
Name three greenhouse gases.
3
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.
4
Climate Change and Atmospheric Pollutants
Name the two additional products that can form during the incomplete combustion of a hydrocarbon fuel.
5
Physics Equations: Recall, Rearrangement and Application
Write the equation linking power, energy and time, and rearrange it for time.

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