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We can distinguish three groups of scientific men. In the first and very small group are those who discover fundamental relations. In the second group we have those men who do not make great discovery but who see the importance and bearing of it. The last group contains the rest of us, the men who have to have things explained to us.
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11 Oct 2026
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...
11 Sep 2026
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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International Academy of Macomb
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British International School of Cairo
Subscriber comments
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Hi, Just wanted to check if the new data booklet version 1.2 will be applicable to 2027 batch
Paper 1 -
Hello Sandra, When the graph is quite small and particularly if the slope is not that steep there is bound to be some uncertainty when measuring the gradient. What is important is that students understand how to obtain the gradient and...
R2.2 Rate of reaction & collision theory -
Hi, I have a quick question about Task 1.2 on slide 10. The marking scheme gives a Δt value of 18 s, whereas my students read it as approximately 20 s from the graph. Given that the scale is not very precise, would 20 s be considered an acceptable...
R2.2 Rate of reaction & collision theory
Geoffrey
Site authorHello Deepika, It is a bit confusing as the cover of the new Version 1.2 IB data booklet does not say when it should be used. It simply says However...
Paper 1