Secondary / Study notes
Combined Science Chemistry
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O-Level 5086 / 5088 (2026) / SEC G3 K326 / K328 (2027)
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13 chaptersExperimental Chemistry
Select apparatus, separate mixtures and judge what measurements actually show.
6 topicsParticles and Atoms
From changes of state to counting the particles in atoms and ions.
3 topicsBonding and Structure
Explain material properties through particles, attractions and moving charges.
5 topicsChemical Calculations
Turn formulae, measurements and equations into defensible numerical answers.
5 topicsAcid-Base Chemistry
Use ions and reaction patterns to explain acids, bases and salts.
3 topicsQualitative Analysis
Identify ions and gases using observations that distinguish them.
4 topicsRedox Chemistry
Track electrons through reactions, electrolysis and electricity-producing cells.
2 topicsPeriodicity and Metals
Find patterns in the Periodic Table and use evidence to predict reactions.
7 topicsChemical Energetics
Explain temperature changes and the energy cost of rearranging particles.
2 topicsRate of Reactions
Explain why reactions speed up, and read what a progress graph actually proves.
3 topicsOrganic Chemistry
Recognise molecular families and connect structures, reactions, fuels and materials.
7 topicsMaintaining Air Quality
Connect atmospheric substances to their sources, effects and possible solutions.
3 topicsData and Experimental Skills
Read unfamiliar evidence, make useful measurements and explain what a result can support.
8 topics