H2 Chemistry Paper 3 Format

Q: What does H2 Chemistry Paper 3 Format cover?
A: Break down the 2026 H2 Chemistry Paper 3 demands, from extended data analysis to synthesis essays, and learn how to pace the two-hour, 80-mark exam worth 35 % of your grade.

Exam snapshot Paper 3 | 2 h | 80 marks | 35 % of the overall H2 Chemistry grade

Paper 3 is the long-form arena where SEAB tests synthesis, evaluation, and multi-topic integration. Expect large data sets, open-ended planning, and organic mechanisms that demand careful structuring. Strong answers blend accurate chemistry with clear explanation and tidy presentation.

Status: SEAB H2 Chemistry (9729, first exam 2026) syllabus last checked 2025-11-29 (PDF last modified 2024-07-17). Paper 3 remains 2 hours, 80 marks, weighting 35 % with Section A (60 marks, all compulsory) and Section B (20 marks, answer one of two).

1 Structure and Timing

• Duration: 120 minutes.
• Questions: Section A (60 marks): three to four free-response questions, all compulsory. Section B (20 marks): two questions, answer one (per SEAB 9729 scheme of assessment).
• Marks: 80 total across both sections.
• Calculator & data booklet: Allowed; ensure quick navigation for constants and spectroscopy tables.

Pacing rule of thumb: About 1.5 minutes per mark. Allocate time before writing—e.g., a 15-mark free-response question (~23 minutes) or the 20-mark Section B essay (~30 minutes). Reserve 5 minutes at the end for a final proof-read.

2 Typical Question Formats