Check out Miss McDonnell’s blog post. Dedicated especially to chemistry!

thestoryofhistory

This post is a tribute to my good friend Sarah who has a great Chemistry Blog which you can find here: http://www.mrselliot.wordpress.com

The First World War is often referred to as ‘the Chemists War’ because of the extent of the developments in chemical warfare, a form of warfare that was considered as uncivilised before the war but then necessary in a desperate attempt to break the stalemate.  A hugely long list of chemicals was used in the war but the main ones were tear gas (bromine and chloroacetone), mustard gas, phosgene and chlorine.

Chlorine was first used in 1915, in an attempt to create a gap in the line. It was mostly ineffective though as it was green in appearance and had a distinctive smell so was easily detectable and also because it settled quickly so could be avoided by standing up on the fire step. Because chlorine is water soluble, holding…

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