Cambridge O Level · 5070

Chemistry topical past papers

Every Cambridge O Level Chemistry (5070) past-paper question from 2010–2025, sorted into 12 syllabus chapters and their subtopics, with the official mark schemes.

Questions
3,957
Chapters
12
Years
2010–2025

Syllabus chapters

  1. States of matter 166 questions
    • Solids, liquids and gases
    • Diffusion
  2. Atoms, elements and compounds 493 questions
    • Elements, compounds and mixtures
    • Atomic structure and the Periodic Table
    • Isotopes
    • Ion and ionic bonds
    • Simple molecules and covalent bonds
    • Giant covalent structures
    • Metallic bonding
  3. Stoichiometry 292 questions
    • Formulae
    • Relative masses of atoms and molecules
    • The mole and the Avogadro constant
  4. Electrochemistry 308 questions
    • Electrolysis
    • Hydrogen–oxygen fuel cells
  5. Chemical energetics 126 questions
    • Exothermic and endothermic reactions
  6. Chemical reactions 288 questions
    • Physical and chemical changes
    • Rate of reaction
    • Reversible reactions and equilibrium
    • Redox
  7. Acids, bases and salts 680 questions
    • The characteristic properties of acids and bases
    • Oxides
    • Preparation of salts
  8. The Periodic Table 167 questions
    • Arrangement of elements
    • Group I properties
    • Group VII properties
    • Transition elements
    • Noble gases
  9. Metals 308 questions
    • Properties of metals
    • Uses of metals
    • Alloys and their properties
    • Reactivity series
    • Corrosion of metals
    • Extraction of metals
  10. Chemistry of the environment 484 questions
    • Water
    • Fertilisers
    • Air quality and climate
  11. Organic chemistry 427 questions
    • Formulae, functional groups and terminology
    • Naming organic compounds
    • Fuels
    • Alkanes
    • Alkenes
    • Alcohols
    • Carboxylic acids
    • Polymers
  12. Experimental techniques and chemical analysis 218 questions
    • Experimental design
    • Acid–base titrations
    • Chromatography
    • Separation and purification
    • Identification of ions and gases