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Wish I had subscribed to this site years ago. Great materials, examples and explanations. Definitely worth it!

Jeff Hinton, Greengates School, Mexico

The InThinking Chemistry website has been a great resource to have. The multiple choice tests have been invaluable in diagnostic marking and the guides to each subtopic, along with their discussions of common pitfalls, have helped to guide and improve...

Richard Young, British International School of Cairo, Egypt

This website has been a life saver for ideas on practical work, how to cover the course and what to focus on. More importantly it's my go to for administrative information on all the nitty-gritty rules and regulations of the IB. Oh! And we even used...

Menchu Sol, International School of Manila, Philippines

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When were elements discovered?

13 April 2018

There are many links on the IB chemistry syllabus that relate to when elements were discovered. Probably the most important one is Topic 3.1... more

Update and a problem to solve

31 January 2018

Quiz questions and galleries for all the sub-topics of Option B : Biochemistry and Option C : Energy for both SL and HL and all the SL sub-topics... more

What are universities looking for?

8 December 2017

An interesting report commissioned by ACS International Schools in partnership with the IB and IBSCA was published earlier this month. It asked... more

Subscriber comments


  • 17 Jun Geoffrey Neuss
    'Curly arrows'
    Hi Vinaya, The SN1 and SN2 mechanisms are only required at HL. In 10.2 (core) it states "Write equations for the substitution reactions of halogenoalkanes with aqueous sodium hydroxide" and in in 20.1 (AHL) it states "Deduce the mechanism of...
  • 17 Jun Vinaya Jaydev
    'Curly arrows'
    Dear Mr. Gregory , Can the SN2 mechanism question be asked between Haloalkane ( primary ) and NH3 / ethylamine ? Unlike :OH- , in case of NH3 , the nucleophile is not :NH2- but :NH3 . If I am not wrong , the transition state has NH3...
  • 13 Jun Geoffrey Neuss
    5. Energetics & thermochemistry
    Hello Stiofan, In the question 25/1000 mol are neutralised and the temperature of 50 cm3 of solution increases by 7 oC. The answer is C because twice as much heat will need to be evolved to raise the temperature of 100 cm3 of solution by 7...
  • 13 Jun Stiofan McFadden
    5. Energetics & thermochemistry
    Hi Geoffrey, can you explain Q11 to me? I think I've confused myself about why c is the correct answer.
  • Hi Patrick, All gases at a given temperature have the same average kinetic energy, so the statement III is not correct so it is not relevant as an explanation as to why real gases behave differently to ideal gases, hence only I and II are correct,...
  • 5 Jun Patrick Thiedeman
    1. Stoichiometric relationships (1)
    Could you explain the answer to Q13 please, I fully understand why l, ll , are correct, but do not know how lll is also related?
  • 5 Jun Geoffrey Neuss
    Equilibrium law
    Thanks for spotting this Jason - the broken link is fixed now
  • 5 Jun Geoffrey Neuss
    Internal Assessment
    Hi Brandy, The IB itself does not have a list of chemicals thta cannot be used as i depends upon which country you are in, and indeed in some cases what part of that country you are in as well as the policies of individual schools as to what...
  • 4 Jun Brandy Kilpatrick
    Internal Assessment
    Hi Geoff, I was not able to locate the FAQ under myIB, but I was hoping maybe you could help. I was wondering if there any chemicals that are restricted for IAs. I had two students ask for questionable items, such as alcohol (I already said...
  • 4 Jun Jason Mejia
    Equilibrium law
    Good morning, Geoff, I just wanted to let you know that the link to the Practical Work on this page takes you to the IB Chemistry home page. You can still get to the practical via the "Other good practicals" drop down menu.
  • 4 Jun Carrie Mohoruk
    Aspirin & penicillin
    Yikes....I am really curious what the answer key will state is acceptable for this exam session. This should be one of the easiest topics but students are still doing very poorly on the marks on this because of the lack of clarity. Despite...
  • 4 Jun Dan Dubay
    Options
    Great approach Erwin. I suppose that you are doing the option after the core is all done. I point this out because its the logical approach for me but I have been hearing about some schools doing it at other times. All in the name of good exam...

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.

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