Daily Practice · GCSE Science

Daily Practice - GCSE Science

15th October 1995

5 questions · GCSE · 584 questions in this band

1
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.
2
Chromatography and Instrumental Analysis
Explain why the baseline is drawn in pencil rather than ink.
3
Chemistry of the Atmosphere
State the approximate percentage of nitrogen in today's atmosphere.
4
The Atmosphere: Evolution and Greenhouse Gases
State two long-term stores of carbon that removed carbon dioxide from the early atmosphere.
5
Climate Change and Atmospheric Pollutants
Explain why burning a fuel can produce nitrogen oxides even if the fuel itself contains no nitrogen.

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