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TOPIC 5

Chemical energetics

Chemistry · IGCSE

106 questionsPapersShow all as
0620/111 mark
May/June 2026 · Question 14

5.1 Exothermic and endothermic reactions

5.1 Exothermic and endothermic reactions
0620/11 May/June 2026 question 14 question
1 partOpen full size ↗
0620/121 mark
May/June 2026 · Question 13

5.1 Exothermic and endothermic reactions

5.1 Exothermic and endothermic reactions
0620/12 May/June 2026 question 13 question
1 partOpen full size ↗
0620/131 mark
May/June 2026 · Question 14

5.1 Exothermic and endothermic reactions, 6.1 Physical and chemical changes

5.1 Exothermic and endothermic reactions6.1 Physical and chemical changes
0620/13 May/June 2026 question 14 question
1 partOpen full size ↗
0620/211 mark
May/June 2026 · Question 1

5.1 Exothermic and endothermic reactions, 1.1 Solids, liquids and gases

5.1 Exothermic and endothermic reactions1.1 Solids, liquids and gases
0620/21 May/June 2026 question 1 question
1 partOpen full size ↗
0620/211 mark
May/June 2026 · Question 15

5.1 Exothermic and endothermic reactions

5.1 Exothermic and endothermic reactions
0620/21 May/June 2026 question 15 question
1 partOpen full size ↗
0620/211 mark
May/June 2026 · Question 16

5.1 Exothermic and endothermic reactions, 6.2 Rate of reaction

5.1 Exothermic and endothermic reactions6.2 Rate of reaction
0620/21 May/June 2026 question 16 question
1 partOpen full size ↗
0620/221 mark
May/June 2026 · Question 14

5.1 Exothermic and endothermic reactions

5.1 Exothermic and endothermic reactions
0620/22 May/June 2026 question 14 question
1 partOpen full size ↗
0620/231 mark
May/June 2026 · Question 1

1.1 Solids, liquids and gases, 5.1 Exothermic and endothermic reactions

1.1 Solids, liquids and gases5.1 Exothermic and endothermic reactions
0620/23 May/June 2026 question 1 question
1 partOpen full size ↗
0620/231 mark
May/June 2026 · Question 17

5.1 Exothermic and endothermic reactions

5.1 Exothermic and endothermic reactions
0620/23 May/June 2026 question 17 question
1 partOpen full size ↗
0620/231 mark
May/June 2026 · Question 19

6.3 Reversible reactions and equilibrium, 5.1 Exothermic and endothermic reactions

6.3 Reversible reactions and equilibrium5.1 Exothermic and endothermic reactions
0620/23 May/June 2026 question 19 question
1 partOpen full size ↗
0620/4221 marks
May/June 2026 · Question 5

6.3 Reversible reactions and equilibrium, 5.1 Exothermic and endothermic reactions, 2.5 Simple molecules and covalent bonds

6.3 Reversible reactions and equilibrium5.1 Exothermic and endothermic reactions2.5 Simple molecules and covalent bonds
0620/42 May/June 2026 question 5 question
9 partsOpen full size ↗
0620/121 mark
Feb/Mar 2026 · Question 12

5.1 Exothermic and endothermic reactions

5.1 Exothermic and endothermic reactions
0620/12 Feb/Mar 2026 question 12 question
1 partOpen full size ↗
0620/121 mark
Feb/Mar 2026 · Question 35

11.6 Alcohols, 11.3 Fuels, 5.1 Exothermic and endothermic reactions

11.6 Alcohols11.3 Fuels5.1 Exothermic and endothermic reactions
0620/12 Feb/Mar 2026 question 35 question
1 partOpen full size ↗
0620/221 mark
Feb/Mar 2026 · Question 12

5.1 Exothermic and endothermic reactions

5.1 Exothermic and endothermic reactions
0620/22 Feb/Mar 2026 question 12 question
1 partOpen full size ↗
0620/221 mark
Feb/Mar 2026 · Question 13

5.1 Exothermic and endothermic reactions

5.1 Exothermic and endothermic reactions
0620/22 Feb/Mar 2026 question 13 question
1 partOpen full size ↗
0620/4219 marks
Feb/Mar 2026 · Question 4

6.3 Reversible reactions and equilibrium, 5.1 Exothermic and endothermic reactions, 2.5 Simple molecules and covalent bonds

6.3 Reversible reactions and equilibrium5.1 Exothermic and endothermic reactions2.5 Simple molecules and covalent bonds
0620/42 Feb/Mar 2026 question 4 question
7 partsOpen full size ↗
0620/111 mark
Oct/Nov 2025 · Question 12

5.1 Exothermic and endothermic reactions, 11.3 Fuels

5.1 Exothermic and endothermic reactions11.3 Fuels
0620/11 Oct/Nov 2025 question 12 question
1 partOpen full size ↗
0620/111 mark
Oct/Nov 2025 · Question 13

5.1 Exothermic and endothermic reactions

5.1 Exothermic and endothermic reactions
0620/11 Oct/Nov 2025 question 13 question
1 partOpen full size ↗
0620/121 mark
Oct/Nov 2025 · Question 14

5.1 Exothermic and endothermic reactions

5.1 Exothermic and endothermic reactions
0620/12 Oct/Nov 2025 question 14 question
1 partOpen full size ↗
0620/131 mark
Oct/Nov 2025 · Question 14

5.1 Exothermic and endothermic reactions

5.1 Exothermic and endothermic reactions
0620/13 Oct/Nov 2025 question 14 question
1 partOpen full size ↗
0620/211 mark
Oct/Nov 2025 · Question 14

5.1 Exothermic and endothermic reactions

5.1 Exothermic and endothermic reactions
0620/21 Oct/Nov 2025 question 14 question
1 partOpen full size ↗
0620/211 mark
Oct/Nov 2025 · Question 15

5.1 Exothermic and endothermic reactions

5.1 Exothermic and endothermic reactions
0620/21 Oct/Nov 2025 question 15 question
1 partOpen full size ↗
0620/221 mark
Oct/Nov 2025 · Question 14

5.1 Exothermic and endothermic reactions

5.1 Exothermic and endothermic reactions
0620/22 Oct/Nov 2025 question 14 question
1 partOpen full size ↗
0620/221 mark
Oct/Nov 2025 · Question 15

5.1 Exothermic and endothermic reactions

5.1 Exothermic and endothermic reactions
0620/22 Oct/Nov 2025 question 15 question
1 partOpen full size ↗
0620/231 mark
Oct/Nov 2025 · Question 16

5.1 Exothermic and endothermic reactions

5.1 Exothermic and endothermic reactions
0620/23 Oct/Nov 2025 question 16 question
1 partOpen full size ↗
0620/231 mark
Oct/Nov 2025 · Question 17

5.1 Exothermic and endothermic reactions, 11.5 Alkenes

5.1 Exothermic and endothermic reactions11.5 Alkenes
0620/23 Oct/Nov 2025 question 17 question
1 partOpen full size ↗
0620/315 marks
Oct/Nov 2025 · Question 8

6.2 Rate of reaction, 5.1 Exothermic and endothermic reactions

6.2 Rate of reaction5.1 Exothermic and endothermic reactions
0620/31 Oct/Nov 2025 question 8 question
4 partsOpen full size ↗
0620/325 marks
Oct/Nov 2025 · Question 8

6.2 Rate of reaction, 5.1 Exothermic and endothermic reactions

6.2 Rate of reaction5.1 Exothermic and endothermic reactions
0620/32 Oct/Nov 2025 question 8 question
4 partsOpen full size ↗
0620/336 marks
Oct/Nov 2025 · Question 8

6.2 Rate of reaction, 5.1 Exothermic and endothermic reactions

6.2 Rate of reaction5.1 Exothermic and endothermic reactions
0620/33 Oct/Nov 2025 question 8 question
5 partsOpen full size ↗
0620/4116 marks
Oct/Nov 2025 · Question 4

5.1 Exothermic and endothermic reactions, 6.3 Reversible reactions and equilibrium, 6.2 Rate of reaction

5.1 Exothermic and endothermic reactions6.3 Reversible reactions and equilibrium6.2 Rate of reaction
0620/41 Oct/Nov 2025 question 4 question
4 partsOpen full size ↗
Chemical energetics: IGCSE Chemistry (0620) past paper questions | Past Paper Pigeon