IB Chemistry HL Notes

Chemistry

Aimnova provides free IB Chemistry Higher Level revision notes for the first-exams-2025 syllabus, covering all six themes plus the HL-only extensions — entropy and spontaneity, transition metals and coloured complexes, Ka/Kb and buffers, rate laws, electrode potentials and reaction mechanisms. Each topic features detailed concept notes, diagrams, worked examples, exam tips, flashcards, and practice questions with AI feedback.

IB Chemistry Higher Level extends the SL course with greater depth in every theme: Gibbs free energy and entropy in energetics, the Arrhenius equation and rate-determining steps in kinetics, equilibrium and acid–base calculations, quantitative electrochemistry, and the curly-arrow mechanisms (SN1/SN2, electrophilic addition) of organic chemistry. HL papers are longer and demand more rigorous explanation, calculation, and evaluation than SL.

Use the theme-by-theme structure below to revise systematically and ensure no HL-only material is missed before Paper 1 (Paper 1A multiple choice and Paper 1B data analysis) and Paper 2 (short-answer and extended-response). The data booklet is provided in every paper.

What's included

All 6 themes (Structure 1–3 + Reactivity 1–3), aligned to the first-exams-2025 syllabus
Concept notes with Lewis/VSEPR structures, reaction profiles, Hess cycles and the periodic table
Formula-first worked examples for the mole, enthalpy, Kc, pH and rate calculations
Spaced-repetition flashcards for definitions, equations, and command-term recall
IB-style practice questions with AI marking and feedback
Guidance for Paper 1 (1A MCQ + 1B data) and Paper 2 (short + extended), with data-booklet technique
SL and HL coverage with level toggle
Free to access — no account required for notes

How to use Chemistry HL notes

1Start with a unit overview. Click any theme heading to see every sub-topic and the key chemistry it covers.
2Read micro-topic notes. Read one topic at a time and follow the concept, the diagram, and the formula-first worked example.
3Test with flashcards. Use Chemistry flashcards to lock in definitions, equations, and command-term answers.
4Practise exam questions. Apply the method to IB-style questions and get AI feedback on where marks are won and lost.

Want practice questions & AI feedback?

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What's included

All 6 themes (Structure 1–3 + Reactivity 1–3), aligned to the first-exams-2025 syllabus

Concept notes with Lewis/VSEPR structures, reaction profiles, Hess cycles and the periodic table

Formula-first worked examples for the mole, enthalpy, Kc, pH and rate calculations

Spaced-repetition flashcards for definitions, equations, and command-term recall

IB-style practice questions with AI marking and feedback

Guidance for Paper 1 (1A MCQ + 1B data) and Paper 2 (short + extended), with data-booklet technique

SL and HL coverage with level toggle

Free to access — no account required for notes

How to use Chemistry HL notes

1Start with a unit overview. Click any theme heading to see every sub-topic and the key chemistry it covers.

2Read micro-topic notes. Read one topic at a time and follow the concept, the diagram, and the formula-first worked example.

3Test with flashcards. Use Chemistry flashcards to lock in definitions, equations, and command-term answers.

4Practise exam questions. Apply the method to IB-style questions and get AI feedback on where marks are won and lost.

IB Chemistry HL Notes

What's included

How to use Chemistry HL notes

Unit 1

Unit 2

Unit 3

Unit 4

Unit 5

Unit 6

Want practice questions & AI feedback?

IB Chemistry HL Notes

What's included

How to use Chemistry HL notes

Unit 1

Unit 2

Unit 3

Unit 4

Unit 5

Unit 6

Want practice questions & AI feedback?