IB Chemistry retake: papers, topics and practical revision advice

Exam structure to prepare for

Use this as a planning map for Chemistry. The accepting school still confirms the exact registration details, but your revision should already match the papers and level you need.

• Chemistry retake planning usually centres on Paper 1 and Paper 2, with IA questions handled separately by schools.
• Paper 1 tests breadth and speed: definitions, trends, short calculations, and choosing the best answer quickly.
• Paper 2 is where full working matters: calculations, explanations, data analysis, organic reasoning, and structured responses.

What to focus on first

Do not start by rereading the whole textbook. Start with the highest-yield topics, then use timed questions to expose the gaps that actually cost marks.

• Stoichiometry, bonding and structure, energetics, kinetics, equilibrium, acids and bases, redox, and organic chemistry.
• Periodic trends and structure-property links, because they appear across many questions.
• Calculations with units, limiting reagents, titrations, pH, equilibrium constants, and enthalpy cycles.
• Organic mechanisms, reaction conditions, and explaining why a product or observation makes sense.

Skills that usually move the grade

For a Chemistry retake, technique matters as much as content. The biggest improvements often come from paper-specific habits rather than simply adding more hours.

• Show units through every calculation; chemistry marks often disappear through missing setup.
• Separate memorisation from application: definitions alone will not carry Paper 2.
• Use mark schemes to learn the exact wording for explanations such as rate, equilibrium, and bonding.
• Practise mixed-topic papers because chemistry often combines several chapters in one question.

Host-school search plan for this subject

Prepare your previous result, target grade, SL/HL level, target session, travel limits, and university deadline. For Chemistry, a school may be able to host one level or session but not another.

IBretake routes the search to eligible coordinators. The accepting school confirms official registration, timetable fit, identity documents, fees, and any exam-day requirements.