IB Chemistry HL · 2025
5.2 How fast? The rate of chemical change
53 past paper questions from 11 papers across 3 exam sessions. See what repeats, then practise the same skills with AI marking.
Original Exam Vault questions with AI markscheme feedback for this topic.
HL archive · 2025 to 2026
5.2 How fast? The rate of chemical change
Latest exam session: May 2026
- questions
- 53
- questions
- papers
- 11
- papers
- exam sessions
- 3
- exam sessions
- micro-topics
- 4
Micro-topics in 5.2 How fast? The rate of chemical change
In syllabus order. The ring is the share of papers each appears in.
5.2.1
Rate of reaction and collision theory
10 questions · in 64% of papersAppears in 7 of the 11 Chemistry HL papers analysed (64%), at least once each.
Frequently testedlast Nov 25 P1 TZ3
5.2.2
Factors affecting rate and the Maxwell–Boltzmann distribution
21 questions · in 91% of papersAppears in 10 of the 11 Chemistry HL papers analysed (91%), at least once each.
Frequently testedlast May 26 P1 TZA
5.2.3
Rate equation, order and rate constant (HL)
14 questions · in 82% of papersAppears in 9 of the 11 Chemistry HL papers analysed (82%), at least once each.
Frequently testedlast Nov 25 P2 TZ3
5.2.4
The Arrhenius equation and activation energy (HL)
8 questions · in 55% of papersAppears in 6 of the 11 Chemistry HL papers analysed (55%), at least once each.
Frequently testedlast May 26 P1 TZA
Exam pattern
How often each micro-topic has been examined, year by year. Each label is explained under the grid.
Does it repeat?
Questions per year for each micro-topic.
fewermore
| Micro-topic | 2025 | 2026 |
|---|---|---|
| 19Factors affecting rate and the Maxwell–Boltzmann distribution, 2025: 19 questions | 2Factors affecting rate and the Maxwell–Boltzmann distribution, 2026: 2 questions | |
| 14Rate equation, order and rate constant (HL), 2025: 14 questions | ·Rate equation, order and rate constant (HL), 2026: 0 questions | |
| 10Rate of reaction and collision theory, 2025: 10 questions | ·Rate of reaction and collision theory, 2026: 0 questions | |
| 7The Arrhenius equation and activation energy (HL), 2025: 7 questions | 1The Arrhenius equation and activation energy (HL), 2026: 1 question |
- Frequently testedin at least a quarter of all papers, and still appearing in the last two years
Past paper generator
Generate Chemistry HL past paper questions
Choose what to revise and build a set in one click. Every question stays whole, so multi-part questions come as they appeared in the exam.
- 1Pick any unit, topic or micro-topic
- 2Generate whole exam questions from the archive
- 3Practise the same skills with AI marking
Questions on 5.2 How fast? The rate of chemical change, by exam session
Which papers asked about 5.2 How fast? The rate of chemical change, and which question numbers. Open a paper to see them highlighted.
May 2026
3 questions across 1 paper
November 2025
9 questions across 4 papers
May 2025
19 questions across 6 papers
Every 5.2 How fast? The rate of chemical change question, unlocked
Generate all 53 questions in this topic at once, practise every one with AI marking, and see how each mark is awarded.
- Every past-paper question in any unit, topic or micro-topic
- Generate sets of 20 or all questions, as often as you like
- Unlimited practice with AI marking and worked answers
- See how every mark is awarded for each question
- Predicted papers and crash courses built from the same data
Used by IB students preparing for Nov 2026, May 2027 and May 2028
From €6/mo. 14-day money-back guarantee. Cancel anytime.
Frequently asked questions
Short answers about this page.
Which Chemistry HL exam sessions are covered for 5.2 How fast? The rate of chemical change?
3 exam sessions from 2025 to 2026, the latest May 2026. Every Paper 1 and 2 in every timezone is read and classified in full, which gives 11 papers in this archive.
Which 5.2 How fast? The rate of chemical change topic comes up most?
Factors affecting rate and the Maxwell–Boltzmann distribution (5.2.2): in 91% of papers, last seen May 26 P1 TZA. Usually "sketch", worth about 3.4 marks in a paper that includes it.
Can I see the original question and mark scheme?
No. The wording belongs to the IB. You get the citation, the marks, the command term and the skill tested, plus our own matched practice questions with worked answers and AI marking.
What do "banker", "due" and "rising" mean?
Banker: examined in at least one sitting in four and still appearing. Due: regular before, but absent for the last two exam sessions. Rising: clearly more common in the last two years. Our classification of real papers, not an IB statistic.
What is free and what needs Pro?
Reading this page and the exam pattern is free. A free account generates three sets of ten questions and launches one practice set. Pro opens every question in any scope, sets of twenty or all, and unlimited practice.
Keep going
More Chemistry HL exam preparation
Every question, by paper
What each Chemistry HL paper tests across all its sittings: the marks by unit and the micro-topics it keeps coming back to.
Open the paper analysis
Predicted questions
The question types most likely in the next Chemistry HL sitting, built from this same archive.
See the predictions
Formula booklet, explained
Every formula you are given in the exam, with when to use it and the traps around it.
Open the booklet guide
Mock exams
Full Chemistry HL papers under timed conditions, marked by AI against IB criteria.
Sit a mock
All IB past papers
Every subject we have classified by topic, with the same exam-pattern analysis.
Browse subjects