Introduction: 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.


livesteamfan (author)2008-06-25

I'm not that great with chemicals and stuff like that, but what's napalm?

a high explosive

Tparker223 (author)garden burger2012-04-23

put it in a pipe and make a wireless sparker... you will get a nice little boom

Behb (author)garden burger2008-11-14

No, it's just a thick, very sticky, slowburning and flammable liquid. Not an explosive and certainly not HE =).

peach_fart (author)2009-03-20

noo, dont use gas unless you want napalm

Tparker223 (author)peach_fart2012-04-23

Makes "cheap" napalm not real napalm...

bumpus (author)2008-01-25

you could also do that with mountain dew, or gas but the resulting substance is napalm like

austin (author)bumpus2008-01-26

haha you cant do that with mountain dew.

bumpus (author)austin2008-01-26

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

technodude92 (author)bumpus2008-02-24

and it kills sperm

Tparker223 (author)technodude922012-04-23

Not all Mountain dews do that only the red kind.

NinjaSloth (author)Kataze2008-10-10


jakee117 (author)Kataze2008-09-11

good so its fake


goes of and drinks gallons of mountain dew

Nyxius (author)bumpus2010-01-28

not chemically possible...he's just yanking your chain for not cleaning up after your self.

technodude92 (author)bumpus2008-02-24

it's like the wonder drink.

rajan007RJ (author)2012-02-01

its gooooooood

busterbuster18724 (author)2011-10-10

can you get the chemicals in nz or what out of?

No-Shi-De (author)2011-07-08

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)

Superpoopa (author)No-Shi-De2011-09-19

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

No-Shi-De (author)Superpoopa2011-09-19

now... wen u said napalm... ur saying napalm BOOM BOOM.. like in the movies?

zapper067 (author)2011-08-06

but not water...

The-X (author)2008-06-02

Oh boy, replace acetone with gasoline and you get napalm!

Captinilliterate (author)The-X2008-06-07

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

No-Shi-De (author)sameotoko2011-07-08

wats hell paste???

sameotoko (author)No-Shi-De2011-07-08

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

franklinonline (author)sameotoko2009-03-29

what whould the dishwasher fuild d? any chemical formuals? and candle wax does what?

covey12 (author)franklinonline2009-05-31

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

Ursell (author)Captinilliterate2009-02-26

Its more commonly called Poor mans Napalm cuz it isn't technically Napalm

FuyuKitsune (author)Ursell2010-05-04

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.

The-X (author)Captinilliterate2008-06-08

Yup, google it, it's all over the place.

franklinonline (author)The-X2009-03-29

which one

I tried it, it works.

thomas the lover (author)The-X2008-06-24

Napalm the f****rs just like in nam

infectiousburden (author)2008-03-21

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

qualia (author)infectiousburden2011-02-25

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_mepalm (author)2010-09-12

Im melting - wizard of oz

alltootechnical (author)2010-04-26

Styrofoam and acetone are different, right? They have different polarities. So they react each other.

Pizzapie500 (author)2009-10-20

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!

battlebotrock (author)2009-04-28


mrpoe (author)2008-03-10

were do u get acetone?

franklinonline (author)mrpoe2009-03-29

its called nail polish remover

z0mbi3 man (author)2008-03-21

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 D655 (author)2008-07-19

cool dogg

Cat on my Lap (author)2008-07-08

I think you mean "goo" not "gew."

Outlander (author)2008-06-06

Then you can take the melted plastic, dry it, shape it, and dry it again and form pretty things!

TheMadScientist (author)2008-04-27

dude, actone can make lots of things disappear...

jager17 (author)2008-04-11

acetone can be bought anywhere

About This Instructable




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