IB Diploma Chemistry 2025
Classified Past Papers
20 Topics · 3 Papers · SL & HL
Paper 1A — MCQ
Multiple-choice questions · 45 min · SL & HL
SL: 30 questions (30 marks) · HL: 40 questions (40 marks) · No negative marking
Paper 1B — Data Based
Data-based & experimental questions · 45 min · SL & HL
SL: 25 marks · HL: 35 marks · Completed together with Paper 1A
Paper 2 — Structured
Short-answer & extended response · SL & HL
SL: 50 marks · 1h 30min · HL: 90 marks · 2h 30min · 44% of grade
How to use these papers
Click any available paper card above to open the classified question bank for that paper. Questions are organised by topic and mapped to the 2025 Structure & Reactivity syllabus. Each question includes a mark scheme and, for Paper 1A, interactive answer checking.
Questions adapted from IB Chemistry past papers (2016–2024) and mapped to the new 2025 syllabus. Prepared by Mr. Tamer Ezzeldin — IB Educator, MYP & DP Certified.