Where can I legally get IB Chemistry past papers and markschemes?

Ask your Chemistry teacher, school librarian, or IB coordinator for materials covered by your school’s authorized access. Teachers may also select official questions through the licensed IB Questionbank. The IB publishes some specimen and sample examination materials publicly, including the current Chemistry specimen papers. Avoid public file-sharing archives whose permission to distribute copyrighted examination papers cannot be verified. RevisionDojo can supplement authorized papers with question practice, current-format predicted papers, and per-question video walkthroughs.

Are IB Chemistry papers from before 2025 still useful?

Pre-2025 papers remain useful for many calculations, definitions, explanations, and core chemical principles. However, they were written for a different syllabus and examination structure, including components that are no longer part of the current format. Check each question against your present syllabus before spending time on it. Do not use an entire older paper as an exact simulation of Paper 1A, Paper 1B, or Paper 2. Recent current-format papers should be saved for realistic timed practice, while older questions can provide additional topic drills.

Should I study the markscheme before attempting a Chemistry question?

No, because seeing the markscheme first prevents the question from revealing what you can produce independently. Attempt the question from a blank page using only the resources permitted in the examination. Afterward, compare each part of your response with the marking points and accepted alternatives. Record the first error in your reasoning rather than copying the finished answer. Finally, redo the question without looking at the solution so that recognition becomes independent recall and application.

How many IB Chemistry past papers should I complete?

There is no official number that guarantees a particular grade. Completing three papers carefully, with full correction and retesting, can be more valuable than rushing through ten papers. Early in revision, use individual questions because they allow you to repair specific weaknesses efficiently. Later, introduce timed sections and complete papers to develop pacing, stamina, and topic selection. Judge progress by whether repeated error types are disappearing, not simply by the number of PDFs completed.

How should I practise IB Chemistry Paper 1A differently from Paper 2?

For Paper 1A, practise selecting methods quickly and analysing why each incorrect option fails. Keep a record of questions you answered correctly by guessing because they still indicate insecure understanding. For Paper 1B, focus on extracting evidence from tables, graphs, and experimental descriptions. Paper 2 practice should emphasize complete working, balanced equations, units, significant figures, and precise explanations. All three forms of practice should include regular use of the current Chemistry data booklet.

What should I put in an IB Chemistry past-paper error log?

Record the session, paper, question number, syllabus topic, marks lost, and a short description of the error. Classify the cause as knowledge, method, interpretation, communication, careless execution, or timing. Add one specific correction, such as revising equilibrium assumptions or checking volume conversions before substitution. Schedule a retest date so the log leads to action rather than becoming a record of old mistakes. Review the log weekly to identify patterns that should determine your next notes, flashcards, or Questionbank session.

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How to Study IB Chemistry with Past Papers

Daniel R.

• 29 Jul 2026•7

How to Study IB Chemistry with Past Papers

IB Chemistry past papers are most effective when you use them to diagnose weaknesses, study the markscheme, correct your reasoning, and retest yourself. For current students, papers from 2025 onward provide the closest match to the present course, while earlier papers are best treated as topic-level practice rather than complete mock exams.

IB Chemistry past papers by year

The current Chemistry course was first assessed in May 2025. It has Paper 1A multiple-choice questions, Paper 1B data-based and experimental-work questions, and Paper 2 short-answer and extended-response questions, as confirmed by the official IB Chemistry subject brief.

Official examination papers and markschemes are protected by IB copyright. Obtain actual session papers through your teacher, school library, IB coordinator, or another authorized source rather than an unofficial public archive.

Year	Syllabus relevance	Question paper and markscheme access	Best use
2025	Current syllabus and format	Official Chemistry specimen papers and markschemes; actual May and November materials through your school or the IB Questionbank	Full timed papers and final exam calibration
2024	Previous syllabus and paper structure	Request licensed papers and markschemes through your school under the IB rules for using examination materials	Individual questions on overlapping content
2023	Previous syllabus and paper structure	School-authorized copies or questions selected through the IB Questionbank	Topic practice, especially calculations and explanations
2022	Previous syllabus and paper structure	School-authorized papers and markschemes	Building fluency after checking syllabus relevance
2021	Previous syllabus and paper structure	School-authorized papers and markschemes	Extra practice, not a realistic current-format mock

The IB Diploma sample examination papers page provides selected public examples, but it is not a complete archive. RevisionDojo’s IB Chemistry past-paper walkthroughs organize available questions by paper, level, session, and time zone.

Understand the current examination format

Component	SL	HL	Final-grade weighting
Paper 1A and 1B	1 hour 30 minutes, 55 marks	2 hours, 75 marks	36%
Paper 2	1 hour 30 minutes, 50 marks	2 hours 30 minutes, 90 marks	44%
Scientific investigation	10 hours, 24 marks	10 hours, 24 marks	20%

Paper 1A rewards quick, accurate selection, but you should still calculate rather than guess from answer patterns. Paper 1B tests interpretation of unfamiliar data and experimental reasoning. Paper 2 requires complete working, precise chemical explanations, and the ability to connect several syllabus ideas in one context.

How to use a paper properly

Attempt, mark, diagnose, and retest

Attempt questions without help. Use the current data booklet and a calculator where permitted, but do not open the markscheme.
Mark strictly. Award a mark only when your response contains the required chemistry, not merely a similar general idea.
Classify each lost mark. Use categories such as knowledge, method, data interpretation, units, command term, careless execution, or timing.
Repair the underlying gap. Return to the matching IB Chemistry revision notes, then complete targeted questions from the Chemistry Questionbank.
Retest after two or three days. Redo the original question from a blank page or attempt a closely related one.

A markscheme is not a model essay. It identifies acceptable marking points, alternatives, units, and required reasoning. If your answer was correct for the wrong reason, count that as a weakness because the same guess may fail in a new context.

Closing study tips

Start with untimed topic questions, progress to timed sections, and reserve recent 2025-format materials for complete simulations. During every attempt, use the data booklet, show calculation steps, underline command terms, and flag answers that were guesses.

Keep a compact error log with the paper reference, topic, lost mark, reason, and next action. Use Chemistry Flashcards for definitions and recurring factual gaps, then use Chemistry predicted papers when you need additional current-format practice without consuming another official paper.

RevisionDojo is most useful as part of this correction cycle: review the matching notes, practise the weak skill, use Jojo AI to clarify feedback, and then retest under stricter conditions. The aim is not to complete the largest number of papers, but to stop repeating the same errors.

Sources and referenced URLs

Year

Syllabus relevance

Question paper and markscheme access

Best use

2025

Current syllabus and format

Official Chemistry specimen papers and markschemes; actual May and November materials through your school or the IB Questionbank

Full timed papers and final exam calibration

2024

Previous syllabus and paper structure

Request licensed papers and markschemes through your school under the IB rules for using examination materials

Individual questions on overlapping content

2023

Previous syllabus and paper structure

School-authorized copies or questions selected through the IB Questionbank

Topic practice, especially calculations and explanations

2022

Previous syllabus and paper structure

School-authorized papers and markschemes

Building fluency after checking syllabus relevance

2021

Previous syllabus and paper structure

School-authorized papers and markschemes

Extra practice, not a realistic current-format mock

Component

Final-grade weighting

Paper 1A and 1B

1 hour 30 minutes, 55 marks

2 hours, 75 marks

36%

Paper 2

1 hour 30 minutes, 50 marks

2 hours 30 minutes, 90 marks

44%

Scientific investigation

10 hours, 24 marks

20%

How to Study IB Chemistry with Past Papers