O Level Chemistry (5070)

Chemical energetics Banker

23 questions · about 3% of the marks we indexed · examined in 9 of 9 sessions.

Questions by year

Paper

2026 May/June · Paper 11 · Q141 markBond energy calculations
2026 May/June · Paper 21 · Q3 (a(i), a(ii), b, c)6 marksBond energy calculations · Energy profiles & activation energy · Exothermic & endothermic

2025 Oct/Nov · Paper 11 · Q141 markBond energy calculations
2025 Oct/Nov · Paper 21 · Q3 (a(i), a(ii))3 marksEnergy profiles & activation energy · Exothermic & endothermic
2025 May/June · Paper 11 · Q161 markBond energy calculations
2025 May/June · Paper 21 · Q3 (c, d)6 marksBond energy calculations · Energy profiles & activation energy

2024 Oct/Nov · Paper 11 · Q131 markExothermic & endothermic
2024 May/June · Paper 11 · Q141 markExothermic & endothermic
2024 May/June · Paper 11 · Q151 markBond energy calculations
2024 May/June · Paper 21 · Q2 (d(i), d(ii))5 marksEnergy profiles & activation energy · Exothermic & endothermic
2024 May/June · Paper 31 · Q1 (e)3 marksExothermic & endothermic
2024 May/June · Paper 41 · Q2 (e)3 marksExothermic & endothermic

2023 Oct/Nov · Paper 11 · Q141 markEnergy profiles & activation energy
2023 Oct/Nov · Paper 11 · Q151 markBond energy calculations
2023 Oct/Nov · Paper 11 · Q161 markEnergy profiles & activation energy
2023 Oct/Nov · Paper 21 · Q6 (b(i), b(ii))3 marksExothermic & endothermic
2023 May/June · Paper 11 · Q121 markEnergy profiles & activation energy
2023 May/June · Paper 21 · Q6 (a, b)8 marksBond energy calculations · Energy profiles & activation energy

Find the full paper on the official Cambridge past-papers page or ask your school. “Paper 42” means Paper 4, variant 2.

Subtopic	Marks indexed	Sessions
Exothermic & endothermic	23	7/9
Energy profiles & activation energy	19	7/9
Bond energy calculations	13	6/9