IB DP Chemistry · First assessment 2025

Chemistry you can see, picture and write.

Every subtopic of the IB Chemistry syllabus, SL and HL. Each lesson connects what you observe, what the particles are doing and the equation that describes it, with a summary sheet, a virtual lab and exam-style practice.

Browse topicsAll lessons

Structure

STRUCTURE 1

Models of the particulate nature of matter

S1.1 · S1.2 · S1.3 · S1.4 · S1.5 — 21 lessons STRUCTURE 2

Models of bonding and structure

S2.1 · S2.2 · S2.3 · S2.4 — 30 lessons STRUCTURE 3

Classification of matter

S3.1 · S3.2 — 31 lessons

Reactivity

REACTIVITY 1

What drives chemical reactions?

R1.1 · R1.2 · R1.3 · R1.4 — 22 lessons REACTIVITY 2

How much, how fast and how far?

R2.1 · R2.2 · R2.3 — 31 lessons REACTIVITY 3

What are the mechanisms of chemical change?

R3.1 · R3.2 · R3.3 · R3.4 — 45 lessons