DP Science Cafe

IB Biology · Chemistry · Physics

Find your bearings, refresh the concept, back to your past papers.

Not a revision course — a twenty-minute stop for IB science.

IB Biology

4 themes · 40 topics · 970 questions, each explained

  1. Theme A Unity and diversity
  2. Theme B Form and function
  3. Theme C Interaction and interdependence
  4. Theme D Continuity and change
Open IB Biology

IB Chemistry

6 themes · 22 topics · 521 questions, each explained

  1. Structure 1 Models of the particulate nature of matter
  2. Structure 2 Models of bonding and structure
  3. Structure 3 Classification of matter
  4. Reactivity 1 What drives chemical reactions?
  5. Reactivity 2 How much, how fast and how far?
  6. Reactivity 3 What are the mechanisms of chemical change?
Open IB Chemistry

IB Physics

5 themes · 24 topics · 672 questions, each explained

  1. Theme A Space, time and motion
  2. Theme B The particulate nature of matter
  3. Theme C Wave behaviour
  4. Theme D Fields
  5. Theme E Nuclear and quantum physics
Open IB Physics

Aligned to the current IB guides (first assessment 2025; Biology updated for 2028) · Free · No account · No ads

How it works

  1. DiagnosticAbout ten questions, then a map of which syllabus statements you own.
  2. LearnShort sections, one per statement, with the misconceptions students most often hold.
  3. VerifyThe rest of the questions, each explained the moment you answer.

Twenty minutes, then back to your past papers. Why the site is built this way.