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The structure known, but not yet accessible by synthesis, is to the chemist what the unclimbed mountain, the uncharted sea, the untilled field, the unreached planet, are to other men.
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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"The resources available for both teachers and students on this website are remarkable. They are organized, user-friendly and topical. My student feedback was that they found all the material worthwhile and appreciated the access. I was evident to me..."
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International School of Prague, s.r.o.
"InThinking has proved to be a great boon for me, as a teacher and my students. The simplification of language, do's and dont's, worksheets with superb questions: appropraite videos/slides; exhaustive guidance on IA as well as EE... you name it !!! Thanks..."
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Good Shepherd International 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...
Internal Assessment -
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...
Internal Assessment -
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...
Internal Assessment
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...
Internal Assessment