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Chemistry (New Syllabus)
IB DP Category 2
Stockholm, Sweden, 3 - 5 May 2024
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Chemistry (New Syllabus)
IB DP Category 2
Berlin, Germany, 23 - 25 August 2024
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Chemistry (New Syllabus)
IB DP Category 1
Online (IB Approved), 25 - 27 October 2024
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Good Shepherd International School (India)
Quote of the day
The text-book is rare that stimulates its reader to ask, Why is this so? Or, How does this connect with what has been read elsewhere?
(John Norman Collie, 1859-1942)
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BlogSee all
A useful chromatography resource from the RSC
The Royal Society of Chemistry has just published a useful resource for students that covers chromatography for the 16-18 year age group. It...
Progress in carbon capture?
This blog looks at a promising recent development which could lead to capturing carbon dioxide emissions from the combustion of fossil fuels...
Subscriber commentsSee all
- Hi John, You make a valid point (to Richard?) about HF and BF3 - although fluorine with an electronegativity value of 4 is always a problem with the ~ 1.8 rule of thumb - but I'm still not convinced that triangular bonding...
- Hello Omar, I'm a chemist, not a physicist, and the question is hypothetical as absolute zero can never be reached. As I understand it particles at absolute zero would not possess translational or vibrational kinetic energy. All particles...
- Richard,Interesting points in the Pause for Thought. The lead chloride examples are particularly interesting. I do find the Triangle most useful for compounds involving Fluorine. If you use the delta EN> 1.8 rule, then students...
- Thank you for the detailed explanation and for giving your time,