Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
19th September 2023
- 1Chromatography 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.
- 2Chemistry of the Atmosphere
Name the two gases released in large amounts by volcanic activity that formed most of the Earth's early atmosphere.
- 3The Atmosphere: Evolution and Greenhouse Gases
Describe, in terms of wavelength, the difference between the radiation the Earth receives from the Sun and the radiation it re-emits from its surface.
- 4Climate Change and Atmospheric Pollutants
Name the two additional products that can form during the incomplete combustion of a hydrocarbon fuel.
- 5Physics Equations: Recall, Rearrangement and Application
Write the equation linking power, energy and time, and rearrange it for time.
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