Combined Science (Chemistry) Paper 5 - QA Tables & Titration Technique (2026)
21 Mar 2026, 00:00 Z
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TL;DR
Combined Science (Chemistry) Paper 5 tests two core skills that students consistently lose marks on: qualitative analysis (QA) observation language and titration technique. This guide covers both with the exact phrasing, sequencing, and precision that earn marks.
This guide and the programme page
This article covers QA and titration technique for Combined Science (Chemistry) Paper 5. For session schedules and venue information, use the O-Level Science (Chemistry) practical programme page.
For a broader Paper 5 overview, start with the Combined Science (Chemistry) Paper 5 Practical Guide.
Looking for structured practical coaching? See our O-Level Chemistry tuition programme.
1 | Paper 5 Chemistry component at a glance
| Item | Detail |
| Paper | Paper 5 (Practical) |
| Duration | 1 h 30 min (shared with second science) |
| Marks | 30 marks (Chemistry portion) |
| Weighting | 15 % of combined-science grade |
| Core skills tested | QA ion identification, titration, observation recording, ACE |
| Applies to | 5087 Science (Chemistry, Biology) and 5088 Science (Physics, Chemistry) |
