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This is an easier to do bottle bomb, very similar to the Alcohol/Chlorine bomb. Basically, what you're using is Drain-o. Not all generic brands work, and I'm not exactly sure what chemical you're looking for specifically, but I'll find out and get back to you guys. Anyways, supposedly there is one that works exceptionally well called 'The Works'. And is supposed to be cheap. I can't really say, because around here I can find a million things by the company 'The Works' but none of their drain cleaner. Maybe you'll have better luck. Anyways, You need the drain cleaner, and tin foil(aluminum foil, whatever). Now, rip up the foil and make little balls. You're going to need a lot. The more small ones you have, the better. It doesn't tend to always work with fewer medium sized balls.


Get to the point already!

Take a 2 liter coke bottle, and empty it. Now take the tin foil balls and put them into the bottle. You want around 2 in. of balls(You can use centimeters instead.). Now pour in the Drain cleaner until it it double the hight of the foil. Cap it, shake it, and throw. Don't worry about getting the cap on super-quick, or it blowing up in your hand. The reaction isn't that fast. You even get to watch it slowly expand until the bottle is about 2-3 times it's original size. it's pretty cool. Then, it'll explode with a huge bang. Don't inhale the fumes, clean up the remains, and wash your hands. Have fun!