Chemical Forums
General Forums => Generic Discussion => Topic started by: Borek on May 02, 2006, 07:11:39 PM
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http://photos1.blogger.com/blogger/2805/622/1600/sierra_mist_mentos_2.jpg
http://www.flickr.com/photo_zoom.gne?id=136670974&size=l
http://photos1.blogger.com/blogger/2805/622/1600/P1011465.jpg
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omg how many mentos did they use and what flavour
i tried putting a sour apple one in my soft drink and it didnt do anything except a few weak bubbles :(
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Hehe, someone has too much time on their hands ;)
I've never seen mentos sold over here, but dropping a few lumps of MgSo4 into a carbonated drink does pretty much the same thing (and a fairly nasty surprise for anyone trying to drink the remainder left in the bottle, as Mg2+ is a pretty powerful osmotic laxative ;D)
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:o It is limpet?
Interesesting.. 8)
Matt
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a fairly nasty surprise for anyone trying to drink the remainder left in the bottle, as Mg2+ is a pretty powerful osmotic laxative ;D
Yes, indeed. ;D
In Italy (but, maybe, it's something common everywhere) we call MgSO4 'English Salt'.
No idea about the reason. :-[
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In Italy (but, maybe, it's something common everywhere) we call MgSO4 'English Salt'.
In Austria we call it "Bittersalz" which means "bitter salt". If you want to know why it is called so just try it ;D
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I don't know if it (MgSO4) has a name over here in the U.S.
Next time I see someone with a 2 liter bottle of soda in school, they better watch themselves. ;)
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I don't know if it (MgSO4) has a name over here in the U.S.
Epsom salt?
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I don't know if it (MgSO4) has a name over here in the U.S.
Epsom salt?
That's it, Epsom salt is MgSO4-7H2O.
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Damn, am I ever glad I don't go to school any more, Constant Thinker ;)
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if you're fast enough to get the lid on after you dump in the mentos, it is really cool. ;D
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if you're fast enough to get the lid on after you dump in the mentos, it is really cool.
ouch, not recommended, that could hurt :-\
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you have to be quick, but it is cool. trust me. ;D
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trust me
:-\
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:-\
haha. ;D seriously though, you just have to kind of run away.
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The best way i've found to get the mentos into the bottle is to take a test tube, load it up with about 10 mentos or so (however many will fit) and then put a piece of paper/card over top of it. Flip the tube over so the card rests between the mentos and the open top of the bottle. When you are ready, yank the paper from underneath the mentos and let them drop in. When you do this make sure the tube is lined up with the hole. It gets rather messy otherwise. Back away fast once you dump the mentos in. It's pretty.
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you have to be quick, but it is cool. trust me. ;D
i did this experiment for school and capping the bottle does make it much more exciting. i just wouldn't suggest wearing nice clothing. i think we achieved a blast radius of about 16 feet using this method.
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ya i got 15 feet , at best guess, when i did mine
the best is when you get the entire roll in a bottle that's never been shaken, it's a must see
i would still like to try the pulling of the card idea only fling the bottle high in the air to see it burst in the air.
a good thing to try might be to turn it upside down on a slant and see if you can turn it into a rocket somehow
if someone has tried it let me know how that worked out for you
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a good thing to try might be to turn it upside down on a slant and see if you can turn it into a rocket somehow
that would be pretty sweet but it would be extremely hard to do because you have gravity working against you the whole way so even if you got the mentos in the bottle without losing to much soda they would fall out as soon as the rocket began to take flight
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i did this experiment for school and capping the bottle does make it much more exciting. i just wouldn't suggest wearing nice clothing. i think we achieved a blast radius of about 16 feet using this method.
i thought it was 16 feet high and a 20-something radius.
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either way you achieved some kind of 16 foot thing
and yes the gravity would be very difficult to overcome but oh so fulfilling if it were to work successfully
if anyone reads more than one topic, this could also be another way to replace the gasoline engine hahahahahahahaha or not
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they wouldn't fall out if the bottle was horizontal and you only launched it that way in hopes of hitting someone ;D
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they wouldn't fall out if the bottle was horizontal and you only launched it that way in hopes of hitting someone ;D
hahaha i like the way you think :)
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does anyone have any ideas on how to make a scale to turn upside down and try the experiment to see exactly how much force gets exerted on the ground during a possible rocket launch of the bottle??
i'd really like to test my idea out
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stand over it, and when it launches, let it hit you in the face, the size of the bruise is directly proportional to the amount of force of liftoff, don't forget the blackeye and bloody nose constants. shown by this function here: F=ENB^3 where F is force, E is the eye constant, N is the nose constant and B is the area of the bruised part of the face. remember, this function only applies when it is referring to the face, if it hits you in the chest, you have to use a different formula to calculate F.
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stand over it, and when it launches, let it hit you in the face, the size of the bruise is directly proportional to the amount of force of liftoff, don't forget the blackeye and bloody nose constants. shown by this function here: F=ENB^3 where F is force, E is the eye constant, N is the nose constant and B is the area of the bruised part of the face. remember, this function only applies when it is referring to the face, if it hits you in the chest, you have to use a different formula to calculate F.
Stand under it mrdeadman and you yourself can calculate using this formula:
F=(V)2(D)/(B)
F is force, V is total volume of swelling of groin region, D is distance bottle travels up the :o , B is pints of blood collected from entire region.
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Stand under it mrdeadman and you yourself can calculate using this formula:
F=(V)2(D)/(B)
F is force, V is total volume of swelling of groin region, D is distance bottle travels up the :o , B is pints of blood collected from entire region.
so based on your proposal, the more blood i lose, the smaller the force?
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oops didn't mean to put the / in there
it is all a directly proportional relationship
but it is still only B1
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does anyone have any ideas on how to make a scale to turn upside down and try the experiment to see exactly how much force gets exerted on the ground during a possible rocket launch of the bottle??
i'd really like to test my idea out
while the 2 equations you offered were rather genius, i'd like to propose something on a more serious note. Somehow I don't think we would get many volunteers for the face bruising or groin bleeding trials.
Use the good old F=MA equation. M would be the mass of the coke that shoots out (tonic water might actually work better) and A, acceleration, could be calculated based on the height the coke shoots up and the gravitational force acting on it.
Another way would be to place objects of varying weights on top of the bottle immediately after filling it with mentos. If it lifts the object then you know it produces at least that much force. I'm sure it would produce enough force to at least lift itself using your rocket idea.
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Why does the scale need to be upside down? Why not just use it the right way up?
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Why does the scale need to be upside down? Why not just use it the right way up?
if you can get the experiment to work well with the coke bottle upside-down that would work. problem is we haven't tried it to know if it works upside down yet or not... so who wants to do the trial and tell us the results?
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I meant why not just put the bottle on the scale the right way then add the mentos. Surely this would also work?
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Surely this would also work?
Can't see a signle reason why it shouldn't.
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I meant why not just put the bottle on the scale the right way then add the mentos. Surely this would also work?
that's a genious plan, just cover the scale with something so it doesn't get soda all over it. tonic water will work way better than soda, it is more carbonated.
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I meant why not just put the bottle on the scale the right way then add the mentos. Surely this would also work?
because you would get no reading. it would only weigh the bottle. if you have the bottle the right way and put the mentos in and the scale above that you can determine the force that it pushes on the scale
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because you would get no reading. it would only weigh the bottle. if you have the bottle the right way and put the mentos in and the scale above that you can determine the force that it pushes on the scale
I disagree.
Sure if you place the bottle on the scale it will weigh the bottle. Now you put the mentos in the bottle and soda shoots out the top of the bottle. If I am correct the soda will exert a force on the bottle (and vice versa) which means you should get a change in the reading on the scale which you could equate to the force. (Newtons laws and all of that A exerts force on B etc etc)
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because you would get no reading. it would only weigh the bottle. if you have the bottle the right way and put the mentos in and the scale above that you can determine the force that it pushes on the scale
it's the same thing, whether it pushes down or up.
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because you would get no reading. it would only weigh the bottle. if you have the bottle the right way and put the mentos in and the scale above that you can determine the force that it pushes on the scale
I disagree.
Sure if you place the bottle on the scale it will weigh the bottle. Now you put the mentos in the bottle and soda shoots out the top of the bottle. If I am correct the soda will exert a force on the bottle (and vice versa) which means you should get a change in the reading on the scale which you could equate to the force. (Newtons laws and all of that A exerts force on B etc etc)
it would work but for your way i think you would need a board to act as the ground to measure the exact exerted force instead of shooting into free air it has a little extra kick
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you would need a board to act as the ground
I don't understand ???
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it would work but for your way i think you would need a board to act as the ground to measure the exact exerted force instead of shooting into free air it has a little extra kick
i see what you're saying now, but the force of the soda pushing out will be the same either way. :o
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you would need a board to act as the ground
I don't understand ???
the board acts as the ground so the bottle pushes against it instead of the open air which would give an incorrect reading