Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
28th April 2011
- 1Alcohols, Carboxylic Acids and Polymers
Name the carboxylic acid produced when ethanol is oxidised.
- 2Chemical Analysis
Name the gas that relights a glowing splint.
- 3Tests for Ions, Gases and Flame Tests
State the flame test colour for sodium ions.
- 4Chromatography 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.
- 5Chemistry of the Atmosphere
Name the two gases released in large amounts by volcanic activity that formed most of the Earth's early atmosphere.
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