Daily Practice · GCSE Science

Daily Practice - GCSE Science

9th February 1999

5 questions · GCSE · 584 questions in this band

1
Alkanes, Alkenes and Crude Oil
Describe the colour change seen when an alkene is shaken with bromine water.
2
Alcohols, Carboxylic Acids and Polymers
Name the carboxylic acid produced when ethanol is oxidised.
3
Chemical Analysis
Give one piece of evidence that a solid sample is impure, based on its melting behaviour.
4
Tests for Ions, Gases and Flame Tests
Describe the test, and the positive result, for ammonium ions.
5
Chromatography and Instrumental Analysis
Write the formula for calculating an Rf value.

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