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Example of connections23 March 2022

This example looks at how the reaction of methane with chlorine can be used to illustrate several different topics. A gallery of slides covering the concepts together with equations and relevant data... more

The Nature of Science20 March 2022

I received an e-mail from a student (not someone I teach) which included the following:"Since I am new to the IB, could you tell me what has been the toughest topic for students generally in the exams... more

Theory of Knowledge (TOK)Free20 March 2022

IntroductionEnlightenment (in a Tibetan thanka)I think that Theory of Knowledge is unique among all subjects taught to 16-19 year olds in schools in that not a single teacher has a university or teaching... more

Learner ProfileFree20 March 2022

The 'IB Learner Profile' was introduced during the early years of this century and is officially detailed in The IB learner profile. It aims to bring a shared set of values to all three of the IB programmes,... more

Anti-Markovnikov addition16 March 2022

Imagine the International Baccalaureate started in the nineteenth century and that it is now 1872. You are an IB student looking for a research question for your internal assessment. You have just read... more

Topics 11 & 21 14 March 2022

What are the 'true' values of units?The units that chemists use are international. A mole is the same worldwide. The SI unit of volume is a cubic metre although in practice a more useful unit is a cubic... more

Topics 10 & 2014 March 2022

1. Hazard symbolsAs many goods are transported around the world it obviously makes sense that there are international agreements on the use of Hazard Symbols for potentially dangerous chemicals (many,... more

Topics 9 & 19 14 March 2022

1. Aluminium productionThe Hall-Hérault process for the production of aluminium by the electrolysis of alumina dissolved in molten cryolite was discovered independently in the 1880s by the American... more

Topics 8 & 1814 March 2022

1. The destruction of coral reefs 2. Our waste gases - your problem?In 1983 the then Swedish Minister for Agriculture noted,"For decades we have been using the atmosphere as a rubbish dump, and now... more

Topics 7 & 17 14 March 2022

1. The location of Heavy IndustriesIt used to be said that the amount of sulfuric acid a country produced was a good measure of the economic strength of the country (see 2. Sulfuric acid – an indicator... more