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The origin of all science is the desire to know causes; and the origin of all false science and imposture is in the desire to accept false causes rather than none; or, which is the same thing, in the unwillingness to acknowledge our own weakness.
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The 2026 Nobel Prize for Chemistry
The Nobel prize for Chemistry this year celebrates the pioneering work of Henri Kagan and Kenso Soai on homochirality - the synthesis of just the required enantiomer of chiral compounds and not the mirror...
The importance of using clear English in IB chemistry
Why using clear English is important when communicating in chemistry. This blog gives examples of two past IB questions where the language used to phrase the questions can lead to different interpretations...
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See all"This is an excellent resource for IB chemistry teachers, it is easy to use and navigate your way through."
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Heidelberg International School
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Hello, In this MCQ, is it A or D? Consider the following system at equilibrium: ...
R2.3 (AHL) Reaction quotient & equilibrium law -
UPDATE! This is now possible! See the page "More than one teacher" as to how to...
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R2.2 Rate of reaction & collision theory
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Site authorHello ManiYour images have not uploaded. You'll need to write the question, or if it's from a May paper, give us the TZ and question number.
R2.3 (AHL) Reaction quotient & equilibrium law