Home of real teaching & learning
- Full support for teachers
- Focus on critical thinking
- Engaging classroom activities
- Integrated student eBook
- Assessed tasks / qBank
- Practice exam questions
The InThinking Guarantee: Our sites are written by expert practitioners and not by AI
See our AI policyDisclaimer: InThinking subject sites are neither endorsed by nor connected with the International Baccalaureate Organisation.
Don't miss out, find out!
- Free trials Take out a one month free trial today!
- Newsletters Subscribe to our FREE subject site newsletters.
Recommendations
Read what users are saying about the site.Site authors
IB Approved Workshops
Chemistry
IB DP Category 2
Barcelona, Spain, 12 - 14 February 2027
Find out more
Chemistry: A focus on the experimental programme
IB DP Category 3
Paris, France, 19 - 21 February 2027
Find out more
Virtual Think-Ins
Focus On: IB Teaching – A Practical Guide for Teachers new to the IB
20 November 2026
Find out more
Keys to Success: The IA in Chemistry
30 November 2026
Find out more
InThinking Shorts
Find all InThinking events at
inthinking.net
Quote of the day
If it is good to teach students about the chemical industry then why is it not good to assign ethical qualities to substances along with their physical and chemical ones? We might for instance say that CS gas is a bad chemical because it can only ever be used by a few people with something to protect against many people with nothing to lose. Penicillin is a good chemical.
.png)
InThinking
Supporting international schools with high quality PD & interactive online resources
Dynamic
Creative
Personal
Creative
Personal
Selected student pages
See all
Most popular
See all
Blog
Free
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...
11 Sep 2026
The importance of using clear English in IB chemistry
Why using clear English is important when communicating in chemistry. This blog gives examples of two past IB questions where the language used to phrase the questions can lead to different interpretations...
Recommendations
See all"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..."
Dina Sonbol
American International School in Egypt
"I have used InThinking for many years and have found it an invaluable source of information for all things IB Chemistry. Geoff is a legend in the world of IB Chem and is both supportive and quick to respond to all queries. I would advocate InThinking..."
James Midgley
Australian Internatonal School
Subscriber comments
-
Hi, I have a quick question about Task 1.2 on slide 10. The marking scheme gives a Δt value of 18 s, whereas my students read it as approximately 20 s from the graph. Given that the scale is not very precise, would 20 s be considered an acceptable...
R2.2 Rate of reaction & collision theory -
THANK YOU!
Internal Assessment -
Hi Margarita, The information you require about two students collaborating to obtain their data is on pages 74-75 in the 2023 guide. This has changed since the previous syllabus where collaboration was not allowed. Essentially you must...
Internal Assessment
Geoffrey
Site authorHello Sandra, When the graph is quite small and particularly if the slope is not that steep there is bound to be some uncertainty when measuring the gradient. What is important is that students understand how to obtain the gradient and...
R2.2 Rate of reaction & collision theory