O Level Chemistry 5070 questions by topic
Every past-paper question part, sorted by the syllabus topic it tests. Each one has its official mark scheme.
States of matter
- Solids, liquids and gases · 46 questions
- Diffusion · 19 questions
Atoms, elements and compounds
- Elements, compounds and mixtures · 11 questions
- Atomic structure and the Periodic Table · 39 questions
- Isotopes · 39 questions
- Ion and ionic bonds · 45 questions
- Simple molecules and covalent bonds · 50 questions
- Giant covalent structures · 23 questions
- Metallic bonding · 31 questions
Stoichiometry
- Formulae · 89 questions
- Relative masses of atoms and molecules · 17 questions
- The mole and the Avogadro constant · 168 questions
Electrochemistry
- Electrolysis · 72 questions
- Hydrogen–oxygen fuel cells · 13 questions
Chemical energetics
- Exothermic and endothermic reactions · 70 questions
Chemical reactions
- Physical and chemical changes · 7 questions
- Rate of reaction · 86 questions
- Reversible reactions and equilibrium · 70 questions
- Redox · 74 questions
Acids, bases and salts
- The characteristic properties of acids and bases · 79 questions
- Oxides · 17 questions
- Preparation of salts · 63 questions
The Periodic Table
- Arrangement of elements · 32 questions
- Group I properties · 16 questions
- Group VII properties · 24 questions
- Transition elements · 29 questions
- Noble gases · 10 questions
Metals
- Properties of metals · 14 questions
- Uses of metals · 13 questions
- Alloys and their properties · 15 questions
- Reactivity series · 35 questions
- Corrosion of metals · 19 questions
- Extraction of metals · 50 questions
Chemistry of the environment
- Water · 35 questions
- Fertilisers · 8 questions
- Air quality and climate · 57 questions
Organic chemistry
- Formulae, functional groups and terminology · 58 questions
- Naming organic compounds · 41 questions
- Fuels · 33 questions
- Alkanes · 29 questions
- Alkenes · 53 questions
- Alcohols · 26 questions
- Carboxylic acids · 48 questions
- Polymers · 51 questions
Experimental techniques and chemical analysis
- Experimental design · 79 questions
- Acid–base titrations · 26 questions
- Chromatography · 16 questions
- Separation and purification · 39 questions
- Identification of ions and gases · 100 questions
Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.