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Even if a scientific model, like a car, has only a few years to run before it is discarded, it serves its purpose for getting from one place to another.

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David L. Wingate (1935 - )
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The 2026 Nobel Prize for Chemistry
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...

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"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

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Institut Montana Zugerberg

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  • Geoffrey

    Site author
    14 Oct 2026

    Hello Doreen,  The assessment of a student's EE is based both on the product and on the process. The external examiner has the actual essay to evaluate the product but of course was not present in any of the discussions between the supervisor...

    Criterion E

  • Doreen

    14 Oct 2026

    Hi, I do not understand how teacher's input in the RPF form may affect student's performance for criterion E. 

    Criterion E

  • Mini

    12 Oct 2026

    Thank you, Geoff. I inadvertently posted the same message one more time, so please ignore it. Thanks once again for your feedback. Mini

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  • Geoffrey

    Site author
    11 Oct 2026

    Hello Mini,Remember an EE is not a Ph.D. thesis! I think this idea from your student has considerable potential. If a good research question is formulated then there is considerable scope for personal input into designing the methodology and to...

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