Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
5th January 2018
- 1Tests for Ions, Gases and Flame Tests
A solution forms a green precipitate with sodium hydroxide solution. Which ion is present?
- 2Chromatography and Instrumental Analysis
State two advantages of instrumental methods of analysis, such as GC-MS, compared with manual chemical tests.
- 3Chemistry of the Atmosphere
Give two processes that removed carbon dioxide from the early atmosphere.
- 4The Atmosphere: Evolution and Greenhouse Gases
Name the two gases produced by photosynthesis and the substance it consumes alongside carbon dioxide.
- 5Climate Change and Atmospheric Pollutants
Give one piece of evidence used to link human activity to recent climate change.
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