Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
- 1Alkanes, Alkenes and Crude Oil
Define the term 'homologous series'.
- 2Alcohols, Carboxylic Acids and Polymers
Name the small molecule typically released as a by-product during condensation polymerisation.
- 3Chemical Analysis
State the reagent added, and the result, that shows a white solid contains sulfate ions.
- 4Tests for Ions, Gases and Flame Tests
Explain how the sodium hydroxide test distinguishes aluminium ions from calcium ions, given that both give a white precipitate.
- 5Chromatography and Instrumental Analysis
Explain why the solvent level in the container must be below the pencil baseline.
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