Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
23rd July 2021
- 1Alkanes, Alkenes and Crude Oil
Name the alkene with the molecular formula C4H8.
- 2Alcohols, Carboxylic Acids and Polymers
Name the type of biological molecule formed when amino acid monomers join together by condensation polymerisation.
- 3Chemical Analysis
State the difference between a pure substance and a formulation.
- 4Tests 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.
- 5Chromatography and Instrumental Analysis
Explain why the baseline is drawn in pencil rather than ink.
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