O-Level Combined Science (Chemistry) Paper 5 Practical Guide 2026
TL;DR
Combined Science (Chemistry) Paper 5 is 1 h 30 min, 30 marks, 15 percent of the 5086 or 5088 grade.
Start with five skills: burette readings, concordant titres, QA observation wording, rates tables, and ACE improvement statements. Paper 5 uses a narrower chemistry scope than pure 6092 Paper 3 and gives less time.
Burette technique is the single biggest differentiator: readings recorded to 0.05 cm3 and close titres chosen according to the paper's instructions. SEAB's 2026 practical-technique guidance gives two titres within 0.20 cm3 as an example for an experiment with a good endpoint.
Looking for pure-science scope instead? Use the O-Level Chemistry 6092 Paper 3 practical guide. Looking for structured subject support? See our O-Level Chemistry tuition programme.
This guide and the programme page
This article covers the chemistry practical content and technique for Paper 5. For session schedules, venue information, and enrolment, use the O-Level Science (Chemistry) practical programme page.
Not sure whether to take 5086 or 5088? See 5086 vs 5087 vs 5088: Which Combined Science Combination to Choose.
Combined Science Paper 5 route map
Use this map before opening another Chemistry page. Combined Science searches often look similar to pure Chemistry searches, but Paper 5 has a shorter timing and a narrower chemistry component.
Practical course completion-record note
For practical, lab, and experiment courses, Eclat Institute maintains centre-held attendance records and may also issue an internal attendance or completion document based on participation and internal assessment.
- For SEAB private-candidate declarations, the key evidence is the centre's attendance or completion record, not a government-issued certificate.
- This is an internal centre-issued certificate, not an MOE/SEAB qualification or accreditation.
- Recognition (if any) is determined by the receiving school, institution, or employer.
- For SEAB private candidates taking science practical papers, SEAB states you should either have taken the subject before or attend a practical course and complete it before the practical paper date.
View our sample completion document (Current sample layout (design may be refined over time))
