Daily Practice · GCSE Science

Daily Practice - GCSE Science

2nd August 1993

5 questions · GCSE · 584 questions in this band

1
Alcohols, Carboxylic Acids and Polymers
Name the two methods used to produce ethanol industrially.
2
Chemical Analysis
State the difference between a pure substance and a formulation.
3
Tests for Ions, Gases and Flame Tests
A solution gives a cream precipitate when acidified with dilute nitric acid and then treated with silver nitrate solution. Name the halide ion present.
4
Chromatography and Instrumental Analysis
Explain why the baseline is drawn in pencil rather than ink.
5
Chemistry of the Atmosphere
Explain, in terms of infrared radiation, how greenhouse gases keep the Earth warm.

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