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TOPIC 10

Chemistry of the environment

Chemistry · Theory (Core)

40 questionsShow all as
0620/3110 marks
May/June 2026 · Question 7

10.3 Air quality and climate, 10.2 Fertilisers, 12.5 Identification of ions and gases

10.3 Air quality and climate10.2 Fertilisers12.5 Identification of ions and gases
0620/31 May/June 2026 question 7 question
0620/3212 marks
May/June 2026 · Question 7

10.1 Water, 12.5 Identification of ions and gases, 3.2 Relative masses of atoms and molecules

10.1 Water12.5 Identification of ions and gases3.2 Relative masses of atoms and molecules
0620/32 May/June 2026 question 7 question
0620/339 marks
May/June 2026 · Question 7

10.1 Water, 10.2 Fertilisers, 12.5 Identification of ions and gases

10.1 Water10.2 Fertilisers12.5 Identification of ions and gases
0620/33 May/June 2026 question 7 question
0620/329 marks
Feb/Mar 2026 · Question 1

2.2 Atomic structure and the Periodic Table, 8.1 Arrangement of elements, 10.3 Air quality and climate

2.2 Atomic structure and the Periodic Table8.1 Arrangement of elements10.3 Air quality and climate
0620/32 Feb/Mar 2026 question 1 question
0620/3210 marks
Feb/Mar 2026 · Question 5

10.2 Fertilisers, 3.2 Relative masses of atoms and molecules, 10.3 Air quality and climate

10.2 Fertilisers3.2 Relative masses of atoms and molecules10.3 Air quality and climate
0620/32 Feb/Mar 2026 question 5 question
0620/319 marks
Oct/Nov 2025 · Question 3

10.2 Fertilisers, 12.5 Identification of ions and gases, 12.4 Separation and purification

10.2 Fertilisers12.5 Identification of ions and gases12.4 Separation and purification
0620/31 Oct/Nov 2025 question 3 question
0620/3210 marks
Oct/Nov 2025 · Question 3

12.5 Identification of ions and gases, 10.1 Water, 12.3 Chromatography

12.5 Identification of ions and gases10.1 Water12.3 Chromatography
0620/32 Oct/Nov 2025 question 3 question
0620/3310 marks
Oct/Nov 2025 · Question 3

10.1 Water, 12.5 Identification of ions and gases, 10.2 Fertilisers

10.1 Water12.5 Identification of ions and gases10.2 Fertilisers
0620/33 Oct/Nov 2025 question 3 question
0620/318 marks
May/June 2025 · Question 1

8.2 Group I properties, 8.4 Transition elements, 9.6 Extraction of metals, 10.3 Air quality and climate, 12.5 Identification of ions and gases

8.2 Group I properties8.4 Transition elements9.6 Extraction of metals10.3 Air quality and climate12.5 Identification of ions and gases
0620/31 May/June 2025 question 1 question
0620/317 marks
May/June 2025 · Question 8

10.1 Water, 10.3 Air quality and climate

10.1 Water10.3 Air quality and climate
0620/31 May/June 2025 question 8 question
0620/329 marks
May/June 2025 · Question 1

2.2 Atomic structure and the Periodic Table, 2.4 Ions and ionic bonds, 8.2 Group I properties, 8.3 Group VII properties, 8.5 Noble gases, 9.4 Reactivity series, 10.3 Air quality and climate

2.2 Atomic structure and the Periodic Table2.4 Ions and ionic bonds8.2 Group I properties8.3 Group VII properties8.5 Noble gases9.4 Reactivity series10.3 Air quality and climate
0620/32 May/June 2025 question 1 question
0620/3211 marks
May/June 2025 · Question 3

2.2 Atomic structure and the Periodic Table, 2.3 Isotopes, 3.2 Relative masses of atoms and molecules, 7.2 Oxides, 10.2 Fertilisers

2.2 Atomic structure and the Periodic Table2.3 Isotopes3.2 Relative masses of atoms and molecules7.2 Oxides10.2 Fertilisers
0620/32 May/June 2025 question 3 question
0620/328 marks
May/June 2025 · Question 8

10.1 Water, 10.3 Air quality and climate

10.1 Water10.3 Air quality and climate
0620/32 May/June 2025 question 8 question
0620/339 marks
May/June 2025 · Question 1

8.1 Arrangement of elements, 8.4 Transition elements, 9.2 Uses of metals, 9.4 Reactivity series, 10.3 Air quality and climate

8.1 Arrangement of elements8.4 Transition elements9.2 Uses of metals9.4 Reactivity series10.3 Air quality and climate
0620/33 May/June 2025 question 1 question
0620/336 marks
May/June 2025 · Question 7

10.1 Water, 10.3 Air quality and climate

10.1 Water10.3 Air quality and climate
0620/33 May/June 2025 question 7 question
0620/327 marks
Feb/Mar 2025 · Question 7

10.3 Air quality and climate, 2.5 Simple molecules and covalent bonds

10.3 Air quality and climate2.5 Simple molecules and covalent bonds
0620/32 Feb/Mar 2025 question 7 question
0620/3111 marks
Oct/Nov 2024 · Question 3

10.1 Water, 12.4 Separation and purification

10.1 Water12.4 Separation and purification
0620/31 Oct/Nov 2024 question 3 question
0620/3211 marks
Oct/Nov 2024 · Question 3

10.1 Water, 12.5 Identification of ions and gases

10.1 Water12.5 Identification of ions and gases
0620/32 Oct/Nov 2024 question 3 question
0620/338 marks
Oct/Nov 2024 · Question 2

2.5 Simple molecules and covalent bonds, 10.3 Air quality and climate, 11.8 Polymers, 2.4 Ions and ionic bonds

2.5 Simple molecules and covalent bonds10.3 Air quality and climate11.8 Polymers2.4 Ions and ionic bonds
0620/33 Oct/Nov 2024 question 2 question
0620/3311 marks
Oct/Nov 2024 · Question 3

10.1 Water, 3.1 Formulae

10.1 Water3.1 Formulae
0620/33 Oct/Nov 2024 question 3 question
0620/3311 marks
Oct/Nov 2024 · Question 5

8.3 Group VII properties, 10.1 Water, 12.5 Identification of ions and gases

8.3 Group VII properties10.1 Water12.5 Identification of ions and gases
0620/33 Oct/Nov 2024 question 5 question
0620/3111 marks
May/June 2024 · Question 6

6.2 Rate of reaction, 1.2 Diffusion, 10.3 Air quality and climate

6.2 Rate of reaction1.2 Diffusion10.3 Air quality and climate
0620/31 May/June 2024 question 6 question
0620/3211 marks
May/June 2024 · Question 5

2.2 Atomic structure and the Periodic Table, 10.3 Air quality and climate, 3.2 Relative masses of atoms and molecules

2.2 Atomic structure and the Periodic Table10.3 Air quality and climate3.2 Relative masses of atoms and molecules
0620/32 May/June 2024 question 5 question
0620/3311 marks
May/June 2024 · Question 5

2.2 Atomic structure and the Periodic Table, 3.1 Formulae, 3.2 Relative masses of atoms and molecules, 10.2 Fertilisers

2.2 Atomic structure and the Periodic Table3.1 Formulae3.2 Relative masses of atoms and molecules10.2 Fertilisers
0620/33 May/June 2024 question 5 question
0620/3213 marks
Feb/Mar 2024 · Question 2

12.5 Identification of ions and gases, 10.2 Fertilisers, 11.7 Carboxylic acids

12.5 Identification of ions and gases10.2 Fertilisers11.7 Carboxylic acids
0620/32 Feb/Mar 2024 question 2 question
0620/3214 marks
Feb/Mar 2024 · Question 6

2.1 Elements, compounds and mixtures, 2.2 Atomic structure and the Periodic Table, 1.1 Solids, liquids and gases, 1.2 Diffusion, 3.2 Relative masses of atoms and molecules, 10.3 Air quality and climate, 7.1 The characteristic properties of acids and bases, 6.3 Reversible reactions and equilibrium

2.1 Elements, compounds and mixtures2.2 Atomic structure and the Periodic Table1.1 Solids, liquids and gases1.2 Diffusion3.2 Relative masses of atoms and molecules10.3 Air quality and climate7.1 The characteristic properties of acids and bases6.3 Reversible reactions and equilibrium
0620/32 Feb/Mar 2024 question 6 question
0620/316 marks
Oct/Nov 2023 · Question 1

7.1 The characteristic properties of acids and bases, 10.2 Fertilisers, 11.4 Alkanes, 8.4 Transition elements

7.1 The characteristic properties of acids and bases10.2 Fertilisers11.4 Alkanes8.4 Transition elements
0620/31 Oct/Nov 2023 question 1 question
0620/3112 marks
Oct/Nov 2023 · Question 3

10.3 Air quality and climate, 7.1 The characteristic properties of acids and bases, 12.5 Identification of ions and gases

10.3 Air quality and climate7.1 The characteristic properties of acids and bases12.5 Identification of ions and gases
0620/31 Oct/Nov 2023 question 3 question
0620/326 marks
Oct/Nov 2023 · Question 1

11.5 Alkenes, 10.2 Fertilisers, 12.5 Identification of ions and gases, 11.4 Alkanes, 8.4 Transition elements

11.5 Alkenes10.2 Fertilisers12.5 Identification of ions and gases11.4 Alkanes8.4 Transition elements
0620/32 Oct/Nov 2023 question 1 question
0620/3212 marks
Oct/Nov 2023 · Question 3

10.3 Air quality and climate, 12.5 Identification of ions and gases

10.3 Air quality and climate12.5 Identification of ions and gases
0620/32 Oct/Nov 2023 question 3 question
Chemistry of the environment: IGCSE Chemistry (0620) past paper questions | Past Paper Pigeon