Re: Demonstration experiment

"Louis Hom" <lhom@xxxxxxxxxxxxxxxx> wrote in message
news:e0eb6b$1a2e$1@xxxxxxxxxxxxxxxxxxxxx

There are a variety of thermochromic systems out there. The simplest is
probably Co(II) in the presence of concentrated chloride (I think it's in
the sci.chem FAQ). There are almost certainly other examples that are
more exotic and more spectacular.
--


Ammonium dichromate - I guess rather toxic these days (no problem when I was
at school)

--
Ron Jones
Process Safety & Development, Alfa Aesar Avocado Lancaster UK
Don't repeat history, see unreported near misses in chemical lab/plant
at http://www.crhf.org.uk
Only two things are certain: The universe and human stupidity; and I'm
not certain about the universe. ~ Albert Einstein


.

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