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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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You are doing a wonderful job by helping IB teachers to have materials which helps them prepare their lessons. I cherish the way each topic gives a presentation which helps the teacher to arouse the interest of the learners before moving into the main...
Chidiebere Obi Machabeng College
International School of Lesotho (Lesotho)
Quote of the day
It is a good morning exercise for a research scientist to discard a pet hypothesis every day before breakfast. It keeps him young.
(Konrad Lorenz, 1903-1989)
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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
- Hello Austin, The question asks for the enthalpy of neutralization so the heat evolved is a step along the way to finding the answer which is why I kept it to four significant figures before giving the final answer to three significant figures....
- In question 1 I think you've rounded the answer twice. Once from 5684.8 to 5685, then again from 5685 to 5690. Wouldn't it be better to go from 5684.8 to 5680? Otherwise, I feel like the heat evolved should be quoted to three...
- Hi Geoff,Thanks for replying so quickly and sharing your insights. Very helpful and always appreciated!All the best,Pete
- Hello Pete, If you look at the assessment criteria for Research and Design (p78 in the guide) it states "... include a concise description of the system in which the research question is embedded, and include background theory of direct relevance."...