Periodic videos revisited and curly arrows

By Tony Tooth2010-09-01T00:00:00

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Web watch: Tony Tooth looks at some websites that may be of interest to chemistry teachers

Periodic Videos

Having first visited this site two years ago I thought it was time for a revisit and things have certainly moved on; videos are now available (by clicking the symbol on the Periodic Table) for all 118 elements. For elements 113-118 the videos are interesting presentations by Professor Martyn Poliakoff or one of his colleagues explaining how to use the Periodic Table to predict these elements' properties and discussing the principles behind their production. Amongst the recently updated videos is an excellent new presentation on fluorine, including a look at liquid fluorine and the reactions of fluorine with carbon, iron, cotton wool and sulfur as well as explanations of the strength of its bonds to other elements and the action of fluoride in toothpaste.

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