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Cambridge · Form 4 · Syllabus 5070

Chemistry

5 topics5 with notes

ZIMSEC Form 4 Cambridge Form 4
Form 4Writing O Level finals this year?Revision mode: every Chemistry past paper by year, with marking schemes, and a checklist of the whole syllabus.
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  1. Stoichiometry and the mole concept Balanced equations with state symbols; ionic equations (e.g. Ag⁺(aq) + Cl⁻(aq) → AgCl(s)). Notes 1 PDF
  1. Electrochemistry Decomposition of an ionic compound, molten or in aqueous solution, by electricity. Cations move to the cathode (reduction); anions move to the anode (oxidation). Notes 1 PDF
  1. Chemical energetics and reactions Exothermic (ΔH negative) and endothermic (ΔH positive) reactions; reaction pathway diagrams with activation energy; bond breaking is endothermic and bond making exothermic. Notes 1 PDF
  2. The Periodic Table and metals Elements arranged by proton number; groups have the same number of outer electrons. Metallic character decreases across a period. Notes 1 PDF
  3. Chemistry of the environment and organic chemistry Testing for water (anhydrous copper(II) sulfate, cobalt(II) chloride); water treatment (sedimentation, filtration, chlorination); air composition; pollutants (CO, SO₂, NOₓ, particulates, methane) and their sources and effects; catalytic converters; greenhouse effect and climate change; acid rain. Notes 1 PDF