Cambridge IGCSE · 0620

Chemistry topical past papers

Every Cambridge IGCSE Chemistry (0620) past-paper question from 2010–2025, sorted into 12 syllabus chapters and their subtopics, with the official mark schemes.

Questions
11,298
Chapters
12
Years
2010–2025

Syllabus chapters

  1. States of matter 575 questions
    • Solids, liquids and gases
    • Diffusion
  2. Atoms, elements and compounds 1,345 questions
    • Elements, compounds and mixtures
    • Atomic structure and the Periodic Table
    • Isotopes
    • Ions and ionic bonds
    • Simple molecules and covalent bonds
    • Giant covalent structures
    • Metallic bonding
  3. Stoichiometry 614 questions
    • Formulae
    • Relative masses of atoms and molecules
    • The mole and the Avogadro constant
  4. Electrochemistry 602 questions
    • Electrolysis
    • Hydrogen–oxygen fuel cells
  5. Chemical energetics 327 questions
    • Exothermic and endothermic reactions
  6. Chemical reactions 720 questions
    • Physical and chemical changes
    • Rate of reaction
    • Reversible reactions and equilibrium
    • Redox
  7. Acids, bases and salts 2,037 questions
    • The characteristic properties of acids and bases
    • Oxides
    • Preparation of salts
  8. The Periodic Table 724 questions
    • Arrangement of elements
    • Group I properties
    • Group VII properties
    • Transition elements
    • Noble gases
  9. Metals 1,010 questions
    • Properties of metals
    • Uses of metals
    • Alloys and their properties
    • Reactivity series
    • Corrosion of metals
    • Extraction of metals
  10. Chemistry of the environment 1,338 questions
    • Water
    • Fertilisers
    • Air quality and climate
  11. Organic chemistry 1,320 questions
    • Formulae, functional groups and terminology
    • Naming organic compounds
    • Fuels
    • Alkanes
    • Alkenes
    • Alcohols
    • Carboxylic acids
    • Polymers
  12. Experimental techniques and chemical analysis 686 questions
    • Experimental design
    • Acid–base titrations
    • Chromatography
    • Separation and purification
    • Identification of ions and gases