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IB Chemistry Exam Review

A targeted review of IB Chemistry SL/HL covering the highest-yield topics, data-booklet skills, and Paper 1–3 exam technique.

Difficulty

Challenging

Popularity

42%

Past questions

3

Study tips

5

Key Topics

Atomic StructureBondingEnergeticsEquilibriumOrganic ChemistryData Booklet Skills

Exam Format & Dates

When Offered

May & November, annually

Total Duration

Papers 1–3 review

Scoring

1–7 scale (IB)

Pass Score

4 = passing | 6–7 = excellent

Administered by: International Baccalaureate OrganizationNext date: May 2026
SectionDurationContentWeight
Paper 1 Practice1 hourMCQ drills30%
Paper 2 Practice2 hoursExtended response45%
Paper 3 Practice1 hourData & options25%

Exam Breakdown & Insights

Paper 1 Practice30%
Paper 2 Practice45%
Paper 3 Practice25%
4/5

Difficulty · Demanding

42

Popularity score

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1 votes

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Study Tips

  1. 1

    Make concept maps connecting topics — modern exam questions frequently cross unit boundaries.

  2. 2

    Draw and label diagrams for every major process — reproducing them from memory is a powerful test of understanding.

  3. 3

    Focus on explaining why things happen, not just what happens — exam questions reward cause-and-effect reasoning.

  4. 4

    Past papers with mark schemes are the single best IB revision resource — learn exactly how marks are allocated.

  5. 5

    Do not neglect your Internal Assessment: it is a significant chunk of your grade that you control before exam day.

Past Exam Questions

MediumAtomic Structure2023

Define Atomic Structure and state the key facts a student must know, using precise scientific terminology.

HardBonding2022

Explain the mechanism behind Bonding: describe what happens and, crucially, why it happens. Include a labelled diagram where appropriate.

MediumEnergetics2024

Design an experiment (or interpret given data) to investigate Energetics. Identify the variables, describe the method, and explain how you would analyse the results.

Common Mistakes to Avoid

  • Cramming content while neglecting experimental-design and data-analysis questions.

  • Describing what happens instead of explaining why — extended questions grade the mechanism, not the observation.

  • Using vague everyday language where precise scientific terminology is required.

Official Resources

Free, official study material for IB Chemistry Exam Review — always start with the source your exam board publishes.

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