Daily Practice

GCSE Science

24th August 1988

5 questions · GCSE · 584 questions in this band

1
Alcohols, Carboxylic Acids and Polymers
Explain why carboxylic acids are described as 'weak acids'.
2
Chemical Analysis
Which reagent is added, and in what colour change, to test for chlorine gas?
3
Tests for Ions, Gases and Flame Tests
Why must dilute nitric acid be added before silver nitrate solution when testing for a halide ion?
4
Chromatography and Instrumental Analysis
A sample produces only one spot when run in three different solvents. What does this suggest about the sample?
5
Chemistry of the Atmosphere
Give two processes that removed carbon dioxide from the early atmosphere.

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