Daily Practice · GCSE Science
Daily Practice - GCSE Science
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15th July 1997
- 1Alkanes, Alkenes and Crude Oil
State the type of reaction that occurs when bromine adds across the double bond of an alkene.
- 2Alcohols, Carboxylic Acids and Polymers
Name the two methods used to produce ethanol industrially.
- 3Chemical Analysis
Give one piece of evidence that a solid sample is impure, based on its melting behaviour.
- 4Tests for Ions, Gases and Flame Tests
Describe the test, and the positive result, for ammonium ions.
- 5Chromatography and Instrumental Analysis
Write the formula for calculating an Rf value.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of July 1997, including the monthly compilation PDF.