Daily Practice · GCSE Science

Daily Practice - GCSE Science

Biology, chemistry and physics recall, definition and calculation, drawn from every strand.

5th July 2025

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
Give one piece of evidence that a solid sample is impure, based on its melting behaviour.
5
Tests for Ions, Gases and Flame Tests
Describe the test, and the positive result, for ammonium ions.

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