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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

Hi fellow chemistry teachers. Iam 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...

Jeff Hinton, Greengate School, Mexico

The InThinking Chemistry Website will be of value to any IB Chemistry teacher. The website is packed full of resources including worksheets and topic tests with answers. The comments about teaching each topic and experimental work are helpful.

Toby Dowling, North London Collegiate School, UK

 Blogmore

Great timing!

29 May 2017

Last month, on the 21st. April 2017 to be precise, the UK experienced the first day since 1882 when all the electricity generated in the country... more

Drinking water from sea-water

9 April 2017

Back in 2010 I wrote a blog, “Sticky tape and a pencil”, about the award of the Nobel Prize (for Physics) to scientists at Manchester University... more

Metallic hydrogen

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

Subscriber comments


  • 21 Jun Geoffrey Neuss
    Antiviral medications
    Many thanks for these two suggestions David. I've included the first one on how enzymes work in Option B under B.2 Proteins & enzymes and added the second one on HIV therapy in 4 above.
  • 21 Jun David Gould
    Antiviral medications
    Dear Geoff, I am currently teaching this option for the first time and as always I am finding your resources and advice very helpful. I have found some good videos along the way and thought I would share them here. The first details how enzymes...
  • 21 Jun Geoffrey Neuss
    Topics 4 & 14
    Hi again Graham, I think it is not even clear if you look at the two IUPAC Gold book definitions: van der Waals forces The attractive or repulsive forces between molecular entities (or between groups within the same molecular entity) other...
  • 21 Jun graham lowe
    Topics 4 & 14
    HI Geoffrey. A grey area for sure, there was a MC question on the may 2016 paper about this, I teach students that Hydrogen bonding is a special case ( FON ) hmm maybe ask IB for clarification as it popped up in the exam. I have some clever...
  • 21 Jun graham lowe
    Topics 5 & 15
    Thats Geoffrey, I will double check back on that one, maybe my old eyes misread the markscheme. Yes I did! senior moment.
  • 13 Jun Geoffrey Neuss
    2 &12. Atomic structure (2)
    Thanks Michael - should be OK now.
  • 13 Jun Michael Broadhead
    2 &12. Atomic structure (2)
    There seems to be some issue with images displaying on this page right now in some questions.
  • 12 Jun Geoffrey Neuss
    Topics 4 & 14
    Hi Graham, This does appear to be rather a grey area. The old programme had definitions (given in Objective 1 statements) but the new programme does not actually require students to give definitions. The guidance for 4.4 states ‘The term...
  • 12 Jun Geoffrey Neuss
    Topics 5 & 15
    Hi Graham, I’m not sure where you have got answer B from? As you say, the answer is definitely D (as that fits the definition) but D is correctly given as the answer in the official markscheme for Qu.18 on the M2016 HL paper – not B.
  • 12 Jun graham lowe
    Topics 4 & 14
    Hi Geoffrey. Have IB got an absolute definition as to what constitutes Van der Waals forces, London ( check) Dipole dipole (check) What about Hydrogen Bonding is it part of the Van Der Waals group I am inclinded to think no as its a big difference...
  • 12 Jun graham lowe
    Topics 5 & 15
    Hi Geoffrey, Question about an energetics question on the May 2016 paper, I used it for an end of year and one of the multiple choice seems odd, Question 18 the answer is B NaCl (s) --> Na+ (aq) + cl- (aq) is the enthalpy of hydration. I think...
  • 7 Jun Cendrella Kettaneh
    CaCO3 in egg shells
    Thank you so much for your response! Highly appreciated!!

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