Instructables
video How to Make a Cup Chemically Disapear
Styrofoam is a polymer and when brought into contact with
acetone the polymer breaks down into its monomers. This
demonstration show the process of depolymerization. It looks pretty cool.

Need a Petri dish (something that is not Plastic to hold Demonstrations in
Styrofoam Cup is placed into petri dish and 20 mL of acetone is poured in

Clean up let acetone evaporate, throw out cup gew.

acetone can be replaced with a number of different solvents like gasoline.
I'm not that great with chemicals and stuff like that, but what's napalm?
a high explosive
put it in a pipe and make a wireless sparker... you will get a nice little boom
No, it's just a thick, very sticky, slowburning and flammable liquid. Not an explosive and certainly not HE =).
peach_fart5 years ago
noo, dont use gas unless you want napalm
Makes "cheap" napalm not real napalm...
bumpus6 years ago
you could also do that with mountain dew, or gas but the resulting substance is napalm like
austin bumpus6 years ago
haha you cant do that with mountain dew.
bumpus austin6 years ago
my 8th grade science teacher had a party before christmas break and sombody left a styrofome cup half full of mountain dew on the table that never got thrown away and when we got back he said it desolved the bottom
and it kills sperm
Not all Mountain dews do that only the red kind.
yay!
jakee117 Kataze6 years ago
good so its fake

yay!

goes of and drinks gallons of mountain dew
Nyxius bumpus4 years ago
not chemically possible...he's just yanking your chain for not cleaning up after your self.
it's like the wonder drink.
rajan007RJ2 years ago
its gooooooood
can you get the chemicals in nz or what out of?
No-Shi-De3 years ago
VERY VERY VERY COOL!!! but all i know about styro is if u cut it, its bad for the ozone... those any body know if this is eco friendly??? (not much of a chemist)
its bad cause it releases a type of gas thats pretty bad,(i forgot what kind of gas it was but you can do this outside) and when the cup is melted, its like napalm, you can light it up and acetone can be found it nail polish remover
now... wen u said napalm... ur saying napalm BOOM BOOM.. like in the movies?
zapper0673 years ago
but not water...
The-X6 years ago
Oh boy, replace acetone with gasoline and you get napalm!
Gasoline + Styrofoam = Napalm? Not being a smarta**, just curious
Gasoline + dishwasher fluid = Molotov
Gasoline + Candle wax = Hell paste
Potentially fatal, be extra careful.
Not to be tried with kids around
wats hell paste???
it's a super-saturated solution of styrofoam in gasoline. It forms a sort of waxy liquid that can be used for incendiary purposes. Do not try it
what whould the dishwasher fuild d? any chemical formuals? and candle wax does what?
dishwasher soap like dawn, thats the main ingredient no one knows about, with out the fire will not stick to anything, and it will go out almost instantly
Its more commonly called Poor mans Napalm cuz it isn't technically Napalm
actually it is napalm (or at least the old type of napalm). Napalm is (or was, they may have changed it) part polystyrene, part gasoline, and then a little accelerant to make sure the flame ignites every bit of napalm before it splatters.
Yup, google it, it's all over the place.
which one
I tried it, it works.
Napalm the f****rs just like in nam
you can use a finger nail polish remover with acetone in it, it will also dissolve cigarette butts of course the unused butts have a white look the used ones are yellowish to orangeish anyway have fun
thanks to the ciggie butts being made up of cellulose acetate fibres. which you already knew, but im just putting in that little bit of trivia for those that don't.
knex_mepalm4 years ago
Im melting - wizard of oz
Styrofoam and acetone are different, right? They have different polarities. So they react each other.
Pizzapie5005 years ago
Someone came into our school and said in the wizard of oz, the witch disappered by dorothy throwing water on her. Then he took out a witch head made of styrofoam and threw acetone on it but he said it's water (then he explained it wasn't). The witch head melted lolz!
cool!!!!!!!
mrpoe6 years ago
were do u get acetone?
its called nail polish remover
z0mbi3 man6 years ago
where does he get all of these crazy chemicals?
acatone is sometimes called nail polish remover and the foam cup you can get anywhere
Matt D6556 years ago
cool dogg
I think you mean "goo" not "gew."
Outlander6 years ago
Then you can take the melted plastic, dry it, shape it, and dry it again and form pretty things!
dude, actone can make lots of things disappear...
jager176 years ago
acetone can be bought anywhere
Lftndbt6 years ago
Nice Instructable, Can I ask...So much great info yet no feedback?? Any chance on some comments to go with your 'Ibles?
how fast does it happen. i need to no for a science project pleasssseeeee reply asap
It happens VERY fast (i.e. the video is not specd up by any means)
It makes for a great Bar trick when everyone is drunk and bored!
Great job! Wow... you posted A LOT of great stuff, keep up the great work!