Library · 0620
IGCSE Chemistry
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2025 94 files
October / November session
- Paper 11 Questions Answers
- Paper 12 Questions Answers
- Paper 13 Questions Answers
- Paper 21 Questions Answers
- Paper 22 Questions Answers
- Paper 23 Questions Answers
- Paper 31 Questions Answers
- Paper 32 Questions Answers
- Paper 33 Questions Answers
- Paper 41 Questions Answers
- Paper 42 Questions Answers
- Paper 43 Questions Answers
- Paper 52 Questions Answers
- Paper 53 Questions Answers
- Paper 61 Questions Answers
- Paper 62 Questions Answers
- Paper 63 Questions Answers
- Grade thresholds
- Examiner report
- 0620 Chemistry November 2025 Confidential Instructions 52.pdf
- 0620 Chemistry November 2025 Confidential Instructions 53.pdf
June session
- Paper 11 Questions Answers
- Paper 12 Questions Answers
- Paper 13 Questions Answers
- Paper 21 Questions Answers
- Paper 22 Questions Answers
- Paper 23 Questions Answers
- Paper 31 Questions Answers
- Paper 32 Questions Answers
- Paper 33 Questions Answers
- Paper 41 Questions Answers
- Paper 42 Questions Answers
- Paper 43 Questions Answers
- Paper 51 Questions Answers
- Paper 52 Questions Answers
- Paper 53 Questions Answers
- Paper 61 Questions Answers
- Paper 62 Questions Answers
- Paper 63 Questions Answers
- Grade thresholds
- Examiner report
- 0620 Chemistry June 2025 Confidential Instructions 51.pdf
- 0620 Chemistry June 2025 Confidential Instructions 52.pdf
- 0620 Chemistry June 2025 Confidential Instructions 53.pdf
March session
2024 94 files
October / November session
- Paper 11 Questions Answers
- Paper 12 Questions Answers
- Paper 13 Questions Answers
- Paper 21 Questions Answers
- Paper 22 Questions Answers
- Paper 23 Questions Answers
- Paper 31 Questions Answers
- Paper 32 Questions Answers
- Paper 33 Questions Answers
- Paper 41 Questions Answers
- Paper 42 Questions Answers
- Paper 43 Questions Answers
- Paper 52 Questions Answers
- Paper 53 Questions Answers
- Paper 61 Questions Answers
- Paper 62 Questions Answers
- Paper 63 Questions Answers
- Grade thresholds
- Examiner report
- 0620 Chemistry November 2024 Confidential Instructions 52.pdf
- 0620 Chemistry November 2024 Confidential Instructions 53.pdf
June session
- Paper 11 Questions Answers
- Paper 12 Questions Answers
- Paper 13 Questions Answers
- Paper 21 Questions Answers
- Paper 22 Questions Answers
- Paper 23 Questions Answers
- Paper 31 Questions Answers
- Paper 32 Questions Answers
- Paper 33 Questions Answers
- Paper 41 Questions Answers
- Paper 42 Questions Answers
- Paper 43 Questions Answers
- Paper 51 Questions Answers
- Paper 52 Questions Answers
- Paper 53 Questions Answers
- Paper 61 Questions Answers
- Paper 62 Questions Answers
- Paper 63 Questions Answers
- Grade thresholds
- Examiner report
- 0620 Chemistry June 2024 Confidential Instructions 51.pdf
- 0620 Chemistry June 2024 Confidential Instructions 52.pdf
- 0620 Chemistry June 2024 Confidential Instructions 53.pdf
March session
2023 94 files
October / November session
- Paper 11 Questions Answers
- Paper 12 Questions Answers
- Paper 13 Questions Answers
- Paper 21 Questions Answers
- Paper 22 Questions Answers
- Paper 23 Questions Answers
- Paper 31 Questions Answers
- Paper 32 Questions Answers
- Paper 33 Questions Answers
- Paper 41 Questions Answers
- Paper 42 Questions Answers
- Paper 43 Questions Answers
- Paper 52 Questions Answers
- Paper 53 Questions Answers
- Paper 61 Questions Answers
- Paper 62 Questions Answers
- Paper 63 Questions Answers
- Grade thresholds
- Examiner report
- 0620 Chemistry November 2023 Confidential Instructions 52.pdf
- 0620 Chemistry November 2023 Confidential Instructions 53.pdf
June session
- Paper 11 Questions Answers
- Paper 12 Questions Answers
- Paper 13 Questions Answers
- Paper 21 Questions Answers
- Paper 22 Questions Answers
- Paper 23 Questions Answers
- Paper 31 Questions Answers
- Paper 32 Questions Answers
- Paper 33 Questions Answers
- Paper 41 Questions Answers
- Paper 42 Questions Answers
- Paper 43 Questions Answers
- Paper 51 Questions Answers
- Paper 52 Questions Answers
- Paper 53 Questions Answers
- Paper 61 Questions Answers
- Paper 62 Questions Answers
- Paper 63 Questions Answers
- Grade thresholds
- Examiner report
- 0620 Chemistry June 2023 Confidential Instructions 51.pdf
- 0620 Chemistry June 2023 Confidential Instructions 52.pdf
- 0620 Chemistry June 2023 Confidential Instructions 53.pdf
March session
2022 97 files
October / November session
- Paper 11 Questions Answers
- Paper 12 Questions Answers
- Paper 13 Questions Answers
- Paper 21 Questions Answers
- Paper 22 Questions Answers
- Paper 23 Questions Answers
- Paper 31 Questions Answers
- Paper 32 Questions Answers
- Paper 33 Questions Answers
- Paper 41 Questions Answers
- Paper 42 Questions Answers
- Paper 43 Questions Answers
- Paper 51 Questions Answers
- Paper 52 Questions Answers
- Paper 53 Questions Answers
- Paper 61 Questions Answers
- Paper 62 Questions Answers
- Paper 63 Questions Answers
- Grade thresholds
- Examiner report
- 0620 Chemistry November 2022 Confidential Instructions 51.pdf
- 0620 Chemistry November 2022 Confidential Instructions 52.pdf
- 0620 Chemistry November 2022 Confidential Instructions 53.pdf
June session
- Paper 11 Questions Answers
- Paper 12 Questions Answers
- Paper 13 Questions Answers
- Paper 21 Questions Answers
- Paper 22 Questions Answers
- Paper 23 Questions Answers
- Paper 31 Questions Answers
- Paper 32 Questions Answers
- Paper 33 Questions Answers
- Paper 41 Questions Answers
- Paper 42 Questions Answers
- Paper 43 Questions Answers
- Paper 51 Questions Answers
- Paper 52 Questions Answers
- Paper 53 Questions Answers
- Paper 61 Questions Answers
- Paper 62 Questions Answers
- Paper 63 Questions Answers
- Grade thresholds
- Examiner report
- 0620 Chemistry June 2022 Confidential Instructions 51.pdf
- 0620 Chemistry June 2022 Confidential Instructions 52.pdf
- 0620 Chemistry June 2022 Confidential Instructions 53.pdf
March session
2021 97 files
October / November session
- Paper 11 Questions Answers
- Paper 12 Questions Answers
- Paper 13 Questions Answers
- Paper 21 Questions Answers
- Paper 22 Questions Answers
- Paper 23 Questions Answers
- Paper 31 Questions Answers
- Paper 32 Questions Answers
- Paper 33 Questions Answers
- Paper 41 Questions Answers
- Paper 42 Questions Answers
- Paper 43 Questions Answers
- Paper 51 Questions Answers
- Paper 52 Questions Answers
- Paper 53 Questions Answers
- Paper 61 Questions Answers
- Paper 62 Questions Answers
- Paper 63 Questions Answers
- Grade thresholds
- Examiner report
- 0620 Chemistry November 2021 Confidential Instructions 51.pdf
- 0620 Chemistry November 2021 Confidential Instructions 52.pdf
- 0620 Chemistry November 2021 Confidential Instructions 53.pdf
June session
- Paper 11 Questions Answers
- Paper 12 Questions Answers
- Paper 13 Questions Answers
- Paper 21 Questions Answers
- Paper 22 Questions Answers
- Paper 23 Questions Answers
- Paper 31 Questions Answers
- Paper 32 Questions Answers
- Paper 33 Questions Answers
- Paper 41 Questions Answers
- Paper 42 Questions Answers
- Paper 43 Questions Answers
- Paper 51 Questions Answers
- Paper 52 Questions Answers
- Paper 53 Questions Answers
- Paper 61 Questions Answers
- Paper 62 Questions Answers
- Paper 63 Questions Answers
- Grade thresholds
- Examiner report
- 0620 Chemistry June 2021 Confidential Instructions 51.pdf
- 0620 Chemistry June 2021 Confidential Instructions 52.pdf
- 0620 Chemistry June 2021 Confidential Instructions 53.pdf
March session
- IGCSE Chemistry — Question index
- 1.1 Solids, liquids and gases
- 1.2 Diffusion
- 2.1 Elements, compounds and mixtures
- 2.2 Atomic structure and the Periodic Table
- 2.3 Isotopes
- 2.4 Ions and ionic bonds
- 2.5 Simple molecules and covalent bonds
- 2.6 Giant covalent structures
- 2.7 Metallic bonding
- 3.1 Formulae
- 3.3 The mole and the Avogadro constant
- 4.1 Electrolysis
- 4.2 Hydrogen–oxygen fuel cells
- 5.1 Exothermic and endothermic reactions
- 6.1 Physical and chemical changes
- 6.2 Rate of reaction
- 6.3 Reversible reactions and equilibrium
- 6.4 Redox
- 7.1 The characteristic properties of acids and bases
- 7.2 Oxides
- 7.3 Preparation of salts
- 8.1 Arrangement of elements
- 8.2 Group I properties
- 8.3 Group VII properties
- 8.4 Transition elements
- 8.5 Noble gases
- 9.1 Properties of metals
- 9.2 Uses of metals
- 9.3 Alloys and their properties
- 9.4 Reactivity series
- 9.5 Corrosion of metals
- 9.6 Extraction of metals
- 10.1 Water
- 10.2 Fertilisers
- 10.3 Air quality and climate
- 11.1 Formulae, functional groups and terminology
- 11.3 Fuels
- 11.4 Alkanes
- 11.5 Alkenes
- 11.6 Alcohols
- 11.7 Carboxylic acids
- 11.8 Polymers
- 12.1 Experimental design
- 12.2 Acid–base titrations
- 12.3 Chromatography
- 12.4 Separation and purification
- 12.5 Identification of ions and gases
- 1.1 Solids, liquids and gases
- 1.2 Diffusion
- 2.1 Elements, compounds and mixtures
- 2.2 Atomic structure and the Periodic Table
- 2.3 Isotopes
- 2.4 Ions and ionic bonds
- 2.5 Simple molecules and covalent bonds
- 2.6 Giant covalent structures
- 2.7 Metallic bonding
- 3.1 Formulae
- 3.2 Relative masses of atoms and molecules
- 3.3 The mole and the Avogadro constant
- 4.1 Electrolysis
- 4.2 Hydrogen–oxygen fuel cells
- 5.1 Exothermic and endothermic reactions
- 6.1 Physical and chemical changes
- 6.2 Rate of reaction
- 6.3 Reversible reactions and equilibrium
- 6.4 Redox
- 7.1 The characteristic properties of acids and bases
- 7.2 Oxides
- 7.3 Preparation of salts
- 8.1 Arrangement of elements
- 8.2 Group I properties
- 8.3 Group VII properties
- 8.4 Transition elements
- 8.5 Noble gases
- 9.1 Properties of metals
- 9.2 Uses of metals
- 9.3 Alloys and their properties
- 9.4 Reactivity series
- 9.5 Corrosion of metals
- 9.6 Extraction of metals
- 10.1 Water
- 10.2 Fertilisers
- 10.3 Air quality and climate
- 11.1 Formulae, functional groups and terminology
- 11.2 Naming organic compounds
- 11.3 Fuels
- 11.4 Alkanes
- 11.5 Alkenes
- 11.6 Alcohols
- 11.7 Carboxylic acids
- 11.8 Polymers
- 12.1 Experimental design
- 12.2 Acid–base titrations
- 12.3 Chromatography
- 12.4 Separation and purification
- 12.5 Identification of ions and gases
Exercise sheets
- Complete pack — exercise sheets + past papers
- 1 States of matter — Part 1
- 1 States of matter — Part 2
- 2 Atoms, elements and compounds — Part 1
- 2 Atoms, elements and compounds — Part 2
- 3 Stoichiometry — Part 1
- 3 Stoichiometry — Part 2
- 4 Electrochemistry — Part 1
- 4 Electrochemistry — Part 2
- 5 Chemical energetics — Part 1
- 5 Chemical energetics — Part 2
- 6 Chemical reactions — Part 1
- 6 Chemical reactions — Part 2
- 7 Acids, bases and salts — Part 1
- 7 Acids, bases and salts — Part 2
- 8 The Periodic Table — Part 1
- 8 The Periodic Table — Part 2
- 9 Metals — Part 1
- 9 Metals — Part 2
- 10 Chemistry of the environment — Part 1
- 10 Chemistry of the environment — Part 2
- 11 Organic chemistry — Part 1
- 11 Organic chemistry — Part 2
- 12 Experimental techniques and chemical analysis — Part 1
- 12 Experimental techniques and chemical analysis — Part 2
Past papers
- 1.1 Solids, liquids and gases
- 1.2 Diffusion
- 2.1 Elements, compounds and mixtures
- 2.2 Atomic structure and the Periodic Table
- 2.3 Isotopes
- 2.4 Ions and ionic bonds
- 2.5 Simple molecules and covalent bonds
- 2.6 Giant covalent structures
- 2.7 Metallic bonding
- 3.1 Formulae
- 3.3 The mole and the Avogadro constant
- 4.1 Electrolysis
- 4.2 Hydrogen–oxygen fuel cells
- 5.1 Exothermic and endothermic reactions
- 6.1 Physical and chemical changes
- 6.2 Rate of reaction
- 6.3 Reversible reactions and equilibrium
- 6.4 Redox
- 7.1 The characteristic properties of acids and bases
- 7.2 Oxides
- 7.3 Preparation of salts
- 8.1 Arrangement of elements
- 8.2 Group I properties
- 8.3 Group VII properties
- 8.4 Transition elements
- 8.5 Noble gases
- 9.1 Properties of metals
- 9.2 Uses of metals
- 9.3 Alloys and their properties
- 9.4 Reactivity series
- 9.5 Corrosion of metals
- 9.6 Extraction of metals
- 10.1 Water
- 10.2 Fertilisers
- 10.3 Air quality and climate
- 11.1 Formulae, functional groups and terminology
- 11.3 Fuels
- 11.4 Alkanes
- 11.5 Alkenes
- 11.6 Alcohols
- 11.7 Carboxylic acids
- 11.8 Polymers
- 12.1 Experimental design
- 12.2 Acid–base titrations
- 12.3 Chromatography
- 12.4 Separation and purification
- 12.5 Identification of ions and gases
How to use these papers
Do the qualitative-analysis questions from several sessions in one go. The tests for ions and gases are a small fixed list that recurs almost unchanged year to year, so meeting them together turns them from something to remember into something you know.
Mark your equations as a marker would: unbalanced is zero, missing state symbols where the scheme asks for them is zero, and a full equation where an ionic one was wanted is zero. These are the cheapest marks in the subject and the ones most often given away.
Once the content is secure, work whole papers to time. Stoichiometry questions are long enough that running out of time is a real failure mode, and the only way to find out whether you are fast enough is to sit one properly rather than working questions untimed.