Daily Practice

GCSE Science

21st May 1991

5 questions · GCSE · 584 questions in this band

1
Organic Chemistry
Hexadecane (C16H34) is cracked to produce dodecane (C12H26) and one other product. Calculate the molecular formula of the other product.
2
Alkanes, Alkenes and Crude Oil
Name the alkene with the molecular formula C4H8.
3
Alcohols, Carboxylic Acids and Polymers
Name the type of biological molecule formed when amino acid monomers join together by condensation polymerisation.
4
Chemical Analysis
State the difference between a pure substance and a formulation.
5
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.

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