Daily Practice · GCSE Science

Daily Practice - GCSE Science

1st October 1998

5 questions · GCSE · 584 questions in this band

1
Alcohols, Carboxylic Acids and Polymers
Name the carboxylic acid produced when ethanol is oxidised.
2
Chemical Analysis
Name the gas that relights a glowing splint.
3
Tests for Ions, Gases and Flame Tests
State the flame test colour for sodium ions.
4
Chromatography 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.
5
Chemistry of the Atmosphere
State the approximate percentage of nitrogen in today's atmosphere.

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