Wednesday, 3 October 2012

Exothermic reactions!

Chiara was doing about exothermic reactions today and wanted to know whether heat is taken in or taken out during an exothermic reaction.  I love doing sceince on a more practical level these days so out came the caustic soda (AKA - Sodium hydroxide) and some good old H2O (water).  Mix them together (very carefully, adding the water very slowly in a well ventilated area) and what do you notice?

Yes, it gets very hot indeed!  This is a really good example of an exothermic reaction and, I believe, because it can be done practically it will be a fact that they will remember more easily.  Cool hey! 

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