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16.1 Rate expression & reaction mechanism2 September 2022

Written specifically for students to provide help and support for the IB Diploma chemistry programme this page provides full coverage of the syllabus content of Topic 6.2 Rate expression & reaction mechanism.... more

5.3 Bond enthalpies 2 September 2022

Written specifically for students to provide help and support for the IB Diploma chemistry programme this page provides full coverage of the syllabus content of Topic 5.3 Bond enthalpies. It encourages... more

18.2 Calculations involving acids & bases 2 September 2022

Written specifically for students to provide help and support for the IB Diploma chemistry programme this page provides full coverage of the syllabus content of Topic 18.2 Calculations involving acids... more

Acid base calculations2 September 2022

How weak is a weak acid?The IB does not require students to be able to solve quadratic equations when it comes to acids and bases calculations. This means that they are required to make an assumption... more

Rate expression & reaction mechanism2 September 2022

1. I was searching around on the Internet and came across a worksheet with questions on the rate expression.The first two questions are1) Write the following for the reaction N2 + 3H2 → 2NH3 more

Bond enthalpies2 September 2022

Be careful when you make up questions using average bond enthalpies to arrive at enthalpy changes for a reaction. Usually it will give results that are quite close to the literature values - but not always.... more

Teaching skills 31 August 2022

I am a little hesitant to write this page – after all who am I to ‘tell’ others how to teach? During the past few years I have sometimes worked for the IB as their official representative at workshops... more

Hydroxychloroquine & IB Chemistry30 August 2022

Hydroxychloroquine has been very much in the news recently as it is a medicine that is being controversially taken by some people both as a preventative and as a treatment against Covid-19. After a brief... more

Reaction rates26 August 2022

In the Applications and skills section of Topic 6.1 Collision theory & rates of reaction it states, " Investigation of rates of reaction experimentally and evaluation of the results", i.e. this forms... more

A.9 Condensation polymers22 August 2022

Written specifically for students to provide help and support for the IB Diploma chemistry programme this page provides full coverage of the syllabus content of Option A - sub topic A.9. It encourages... more