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InThinking is a great organisation. I got my first category training with them and it was one extremely useful to my teaching. In addition, the website is highly in line with the training and the IB curriculum and also very helpful. It is such a blessing...

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Metallic hydrogen

Friday 10 February 2017

Back in 1989 Martin Fleischmann and Stanley Pons claimed to have achieved cold fusion. Cold fusion is the fusion of two small nuclei occurring... more

Carbon atoms can bond to more than four other carbon atoms

Monday 16 January 2017

“Each carbon atom can only bond to a maximum of four other carbon atoms.” This well known and seemingly incontrovertible axiom of organic... more

Updated periodic table

Friday 23 December 2016

Since the IB data booklet for first use in the May 2016 examination session came into existence there have been several updates as mistakes... more

Subscriber comments


  • 25 Mar Korin Riske
    Reflective statement
    You are fantastic! Thanks so much.
  • 24 Mar Geoffrey Neuss
    Internal Assessment
    Hi Syed, I suggest you look at the Chief Examiner’s report on IA for May 2016. Many students (usually those who are also studying Physics or Biology) do use more sophisticated forms of analysis (e.g. error bars on graphs as well as T tests...
  • Hi Darkul, Thanks for this. Several typos have already been corrected by OUP in later reprints of the book, including the one on page 33 but the ones on pages 36 and 182 still need doing so I’m grateful that you have brought them to my attention.
  • 24 Mar Geoffrey Neuss
    6. Chemical kinetics
    Anthi and Calvin, Apologies for this and thanks to both of you for pointing it out. It was the equation, not the numbers, that had been written wrongly. I have now corrected it to 2X + Y → 2Z rather than X + 2Y → 2Z. The answer remains...
  • 24 Mar Syed Arshad Mushtaq
    Internal Assessment
    Hi Geoffery Some of my students are doing statistical analysis like T test or standard deviation and something called Pearson deviation for their individual investigations. Honestly some of these tests like T test, I never did. They actually...
  • 24 Mar Anthi Kotsiliou
    6. Chemical kinetics
    I mean of 4 moles of Y
  • 24 Mar Anthi Kotsiliou
    6. Chemical kinetics
    Geoff and Calvin, I am teaching the rates chapter right now and I am going through questions and thinking of ways to present the subject. I think that Calvin is right from the point of view of relative rates: if 2 moles of X react, then, in...
  • 24 Mar Darkul Tiyessova
    Topic 1
    Hi Geoff, it's me again :-) On the page 182 of Study guide in "Stoichiometric relationships" Short answers to question 5 in calculations of percentage of Fe in ore: x100 should be in the numerator of the fraction bur mistakenly it is written...
  • 24 Mar Darkul Tiyessova
    Further aspects of covalent bonding
    Hi Geoff, there is a typo on page 33 of Study guide: in the calculation of wavelength of UV light needed to break bonds in oxygen molecule final answer should be 241 nm not 2.41 nm. Also on page 36 in question 12 formula of propanal must be...
  • 24 Mar Kjersti Noulund
    Rate expression & reaction mechanism
    Ok. Thank you!
  • 24 Mar Geoffrey Neuss
    Reflective statement
    Hi Korin, Thanks for your kind comments, I'm glad you are finding the site useful. Students studying more than one science do only have to do the Group 4 Project once and so, if they wish, can use the same reflective statement on their completed...
  • 24 Mar Geoffrey Neuss
    6. Chemical kinetics
    Hi Calvin, No - the rate with respect to a particular species refers to the change in concentration of that species over time.

Resources


Chemistry for the IB Diploma (Oxford IB)

The new edition of the Study Guide (which has sold over 150,000 copies) by Geoffrey Neuss for first exams in 2016.

more info