Another Water Experiment
Pretty cool
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3. Salem commented 14 years ago
http://drholly.typepad.com/ask_me_a_chemistry_questi/2006/01/pepper_and_soap.html
That link explains it I think!
That link explains it I think!


4. Voutelamberopipi commented 14 years ago
disclaimer: only try this with bowls of water


9. CrackrJak commented 14 years ago
It all has to do with Surface Tension.
Soap makes water 'Wetter', Allows it to break up into much smaller particles. This is way soapy water gets your clothes clean, It allows the water to soak through instead of beading up.
The pepper is floating on the outside 'skin' of the water, Initially, The soap destroys that 'skin' and then because the top of the surface of the water is curved the pepper slides down the sides till it reaches the rim of the bowl.
This is not magnetic or electric repulsion.
Soap makes water 'Wetter', Allows it to break up into much smaller particles. This is way soapy water gets your clothes clean, It allows the water to soak through instead of beading up.
The pepper is floating on the outside 'skin' of the water, Initially, The soap destroys that 'skin' and then because the top of the surface of the water is curved the pepper slides down the sides till it reaches the rim of the bowl.
This is not magnetic or electric repulsion.


11. TheProfessor commented 14 years ago
Thank you for those words of caution from Maffis. Experiments such as this ought to be perfectly safe, but please remember to follow the instructions precisely. Any deviation might prove disasterous.
Do NOT use petrol instead of water!
Do NOT sprinkle on granules of gunpowder instead of pepper!
Do NOT insert a lighted match intead of your finger!
Remember. Safety first!
Do NOT use petrol instead of water!
Do NOT sprinkle on granules of gunpowder instead of pepper!
Do NOT insert a lighted match intead of your finger!
Remember. Safety first!


14. spetzialist commented 14 years ago
Seriously this is soooooooooo old..


15. Usdevildoggmc commented 14 years ago
#3 explains it pretty well but I think it could of been explained with half the text =D


20. eNdEmiOn06463 commented 14 years ago
There are tons of little experiments you can do with surface tension. Just look 'em up. I like the one with the little boat being propelled by a drop of soap.


21. kutless429 commented 14 years ago
I don't know what that is, thus I rather not stick my finger in it...
-16 1. kozy commented 14 years ago