(it's data about Cr, but that's not really what this is about)
And scroll down a bit to the "WebElements Movie" there's an interesting video given to us by Sheffield Uni.
I would like to know more about this reaction, focusing on the why part of the 'snakes' being formed (watch the video if you don't know what I mean).
[/i']shows the result of burning ammonium dichromate, (NH4)2Cr2O7, containing pellets of mercuric thiocyanate (HgCNS)
I know that traditionally ammonium dichromate makes a volcano effect which is visible here and I'm guessing there were 3 "mercuric" [i](wouldn't it just be mercury?) thiocyanate pellets as there were 3 'snakes'.
1) Why do the snakes form? What would the chemical formula of the 'snakes' be?
2) It says this is a dangerous experiment, I see it says this on basically every experiment, but is there actually anything seriously dangerous here, like some gas produced?
Or I spose if anyone can give me the full equation of the whole reaction I could answer that for myself!
I know we're dealing with 2 toxic chemicals and the ammonium dichromate is corrosive/oxidising, but I know that so I can work with it, I was wondering if there were other dangers e.g. poisonous gas being produced etc.
but that doesn't include the HgCNS side of things