video How to Dramatically Demonstrate a Decomposition Reaction
This chemical volcano is a result of the decomposition of Ammonium Dichromate.

A decomposition reaction (aka analysis reaction) follows the general formula below

A--> B + C

A compound breaks down into smaller components.

This is the demonstration of the decomposition of Ammonium Dichromate

(NH4)2Cr2O7 ---> N2 + 4H2O + Cr2O3

Cr2O3 -the green solid


Chromium III and chromium VI, as well at its compounds, including ammonium dichromate, are known carcinogens. Chromium will irritate the mucous membranes. Therefore, take care to perform this demonstration in a well-ventilated area (preferably a ventilation hood) and avoid skin contact or inhalation of the materials. Wear gloves and safety goggles when handling ammonium dichromate.
antienoob6 years ago
were could i find the materials needed for this. cose i so wont to try this at home.
pwest716 years ago
Any way to make a similar effect, but safe for in a home? Looking to make a "faux" volcano/waterfall.....
MacLean6 years ago
so what chemical is first burned? ammonium?
duckman19706 years ago
yah it worked whoooo BANG! ahhh ahhhhh ahhhhhhh sick volcano man
szechuan536 years ago
very nice I also needed a shovel (I just used a little beach shovel though)
hacedor6 years ago
I needed a shovel!?!
The Fallen6 years ago
this is a decomposition reaction, where is all the energy coming from? breaking bonds requires energy, correct?
Heat is energy. Did you now watch the clip?
Well, he kinda heated it up with a torch.. =/ If that's not energy, then I don't know what is.
Arbitror6 years ago
That is neat!
lol looks like a volcano
nice jou must be the first one to notice that on the whole world! congrats! would you like a cookie?
I would love one, thanks.
tubajoey17 years ago
where might i get the materials for this? like, somewhere i could go locally, not the internet. thanks!
big-jamie7 years ago
makes a hell of a mess lol but very cool (H)
Looks awesomely awesome to the most awesomeness of awesome, keep up the great videos!
tyeo0987 years ago
Ultimate science fair volcano!