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Chemistry
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Stockholm, Sweden, 2 - 4 May 2025
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Chemistry
IB DP Category 2

Barcelona, Spain, 29 - 31 August 2025
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Chemistry: A focus on the experimental programme
IB DP Category 3

Online (IB Approved), 17 - 19 October 2025
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If you want to become a chemist you will have to ruin your health. If you don’t ruin your health studying, you won’t accomplish anything these days in chemistry.

(Justus von Liebig, 1803-1873)
(Justus von Liebig, 1803-1873)
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S3.1 Periodic table (1) - classification of elements
Free
IB Chemistry (SL & HL) for teachers
S3.1 Periodic table (1) - classification of elements
Possible syllabus interpretation problems
Free
IB Chemistry (SL & HL) for teachers
Possible syllabus interpretation problems
Using student access
Free
IB Chemistry (SL & HL) for teachers
Using student access
Practice HL Paper 2 ('mock') exams
IB Chemistry (SL & HL) for teachers
Practice HL Paper 2 ('mock') exams

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Printable versions of written tasks
IB Chemistry (SL & HL) for teachers
Printable versions of written tasks
Teaching each topic & sub-topic
IB Chemistry (SL & HL) for teachers
Teaching each topic & sub-topic
Printable versions of MC Topic tests
IB Chemistry (SL & HL) for teachers
Printable versions of MC Topic tests
IB Chemistry (SL & HL) for teachers
Free
IB Chemistry (SL & HL) for teachers
IB Chemistry (SL & HL) for teachers
Fast track to tests & questions
Free
IB Chemistry (SL & HL) for teachers
Fast track to tests & questions
HL Practice Paper 2 (1)
Complete course for students
HL Practice Paper 2 (1)

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Geoffrey
Data-based question (5)
Part (d) is not about the decomposition of H2O2. Your students should already know that an acidified solution of KMnO4 is a classic oxidizing agent and that iodide ions are easily oxidised. They are told in the question...
19 Apr 2025
Geoffrey
Data-based question (5)
No Austin - look at the bottle in the accompanying picture which is clearly labelled 20 volume H2O2. It means that 1 volume of H2O2 will produce 20 volumes of oxygen gas at the same temperature and pressure.
19 Apr 2025
Austin
Data-based question (5)
My students had some trouble with part (d) of this question.  Given that the decomposition equation for hydrogen peroxide is provided at the start of the question, it wasn't possible for them to arrive at the oxidation half equation you have...
18 Apr 2025
Austin
Data-based question (5)
Should part (c) read "20 volume O2 at STP", rather than "20 volume H2O2 at STP"?
18 Apr 2025

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