Formulae, functional groups and terminology — Difficult
Transfer your understanding to a changed context, justify decisions and check your reasoning. No hints during the test.
Includes extension practice
Displayed formulas, saturation and homologous series are covered; required recall of specific general formulas, acid/ester groups and structural-isomer work extends this syllabus.
Easy, Normal and Difficult describe practice demand; they are not the official Core and Extended tiers.
- igcse-cambridge-cie-0654 2028–2029 · C11.1–C11.2
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