Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
25th September 2025
- 1Organic Chemistry
Balance the equation for the complete combustion of methane: CH4 + O2 -> CO2 + H2O
- 2Alkanes, Alkenes and Crude Oil
Propene (C3H6) reacts with steam in the presence of a catalyst. Name the catalyst, and name the type of compound formed.
- 3Alcohols, Carboxylic Acids and Polymers
State the functional group found in all alcohols.
- 4Chemical Analysis
Which reagent is added, and in what colour change, to test for chlorine gas?
- 5Tests for Ions, Gases and Flame Tests
Why must dilute nitric acid be added before silver nitrate solution when testing for a halide ion?
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