Path: utzoo!mnetor!uunet!lll-winken!lll-tis!ames!ll-xn!mit-eddie!bbn!gatech!mcnc!ecsvax!howell From: howell@ecsvax.UUCP (Doc A. Howell) Newsgroups: sci.misc Subject: Re: Soap Bubbles Message-ID: <4933@ecsvax.UUCP> Date: 14 Apr 88 14:41:43 GMT References: <631@amc.UUCP> <1958@ubc-cs.UUCP> Distribution: na Organization: UNC Educational Computing Service Lines: 15 Summary: re: Soap Bubbles How about this answer? When you have soap in the container with a certian amount of water it occupies an amount of space. When you shake the container the soap mixes with the water and expands which compresses the air inside of the jug. To test this theory, I guess you could fill a jug with soap suds, seal it tight and let it set until the suds settled back to basically just soapy water. When you removed the cap, there should be a rush of air back into the bottle. Another more scientific possibility would be that the soap could react with the water molecules and cause them to break up into their hydrogen and oxygen components. Since a gas is more active than a liquid the pressure would increase inside of the jug. I like both of these answers so take your pick.