Thursday, August 17, 2006

Going beyond Mentos

I'm sure I am not the only one seeing kids (and some "big" kids...) everywhere playing with Mentos and a big bottle of diet cola, some of them hacking the trick to its limit.

Mentos + Diet Cola propelled Rocket



Now, if you consider that funny, check this out.

CO2 propelled Bucket

What you need is:
  • Some dry ice.
  • Some empty 1/2L bottles
  • One Bucket

Fill 1/3 of the bottle with water.
Put some dry ice in it, close it tightly and leave it on the floor.
Cover the bottle with the bucket.
Run, and if it doesn't explode do not pick it up!

Now, that is fun!


How does it work?

As opposed to frozen water (wet ice), dry ice is frozen carbon dioxide which at temperatures above -78°C starts to change its state. If the pressure is under 5.1 atmospheres it doesn't melt but sublimates directly into gas, producing enough pressure to make the bottle blow.

3 Comments:

Anonymous rodolfo said...

Cool!

10:39 PM  
Blogger Anthony said...

It's cool, but these guys have a lot of time on their hands...

2:12 PM  
Anonymous Anonymous said...

true, but so did the guys who took the time to figure out mentos and diet coke.

10:21 PM  

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