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This is the Conversation Forum for How Soap Works << chem Soap >> Subject: Try this at home. Posted Aug 5, 2001 by rattie one   Posting 1 Have a go at this, it's fun. Take a saucer of milk and carefully put 2 or 3 drops of food colouring in 2 or 3 different areas of the milk, nothing much happens right? Now add one drop of your favourite brand of washing up liquid. You have your own little psychedelic colour show. Seriously though, this is supposed to demonstrate how soap molecules affect surface tension. It's a great one to do with the children! Have fun. Read the First Reply to this Posting Subject: Try this at home. Posted Aug 7, 2002 by Researcher 200140 This is a reply to this Posting   Posting 2 Plus if you float paper on to the surface the colours will transfer, instant master piece ! :o) Conversation list Most of the content on h2g2 is created by h2g2's Researchers, who are members of the public. The views expressed are theirs and unless specifically stated are not those of the BBC. The BBC is not responsible for the content of any external sites referenced. In the event that you consider anything on this page to be in breach of the site's House Rules, please click on the relevant button to alert our Moderation Team. Conversation list

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