O-Level Chemistry Paper 3 Planning Scenario Bank
Study guideUpdated 17 Jul 2026
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Reviewed by
Azmi·Senior Chemistry Specialist
TL;DR
Planning contributes 15% of Paper 3, and candidates must outline variables, safety controls, apparatus, and data treatment under time pressure.
This scenario bank offers short prompts spanning the core experiment families so you can drill Planning responses before tackling full practicals.
Pair each scenario with MMO/PDO/ACE reflections to internalise how planning choices drive execution and evaluation. When you need full model answers rather than prompts, see the companion O-Level Chemistry planning question bank.
Keep the Hub Handy
Use this scenario bank together with the hands-on guides at the O-Level Chemistry Experiments hub so you can jump from written plans to actual titration, separation, and electrolysis rehearsals seamlessly.
This page owns timed Planning prompts. Use the companion pages when you need a different Planning task:
| Planning need | Owner page |
| Full worked model responses | Planning question bank |
| Aim, variable, safety, and data-use sentence starters |