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As ideas are preserved and communicated by means of words, it necessarily follows that we cannot improve the language of any science, without at the same time improving the science itself; neither can we, on the other hand, improve a science without improvising the language or nomenclature which belongs to it.
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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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See all"As we begin a new syllabus in Chemistry, this website has been a place to gain insight and to share ideas. This website guides my planning and delivery of lessons. The links to TOK and the learner profile suggestions help me make meaningful connections..."
Melanie Kells
Canadian International School
"Hi fellow chemistry teachers. I am leaving IB this year but ABSOLUTELY recommend that you lobby your coordinators and administrators to get access to this site. It is something I wish i had done/been aware of and done YEARS ago. Geoff makes things easily..."
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Greengate School
Subscriber comments
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Hello, We have a shortage of chemicals and when there two students came up with the idea of burning different length of alcohols to find out the energy released by each, I suggested that they work together to collect sufficient data. In...
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Hi Sian, Replying to questions on how IA marks have been arrived at (usually why they have been lowered) by external moderators is something I find difficult to do, particularly as I have not seen the actual work being assessed. InThinking...
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Hello Geoffrey, We have received feedback on our IA's from May2026. Between us, we have a long history of teaching the course and usually have our grades accepted, or amended by +/-1. This year, all of our students were marked down by...
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Geoffrey
Site authorHi Margarita, The information you require about two students collaborating to obtain their data is on pages 74-75 in the 2023 guide. This has changed since the previous syllabus where collaboration was not allowed. Essentially you must...
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