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Silviamar: How does soap clean? |
Category: Science for everybody 35 comments 17 Jul 2005 @ 09:54 by jstarrs : I'll never look at a bar of soap.....in the same way. I wonder how it works on swear words though? Sometimes, when we were kids & spoke bad words, the grown-ups would say "Now wash your mouth out with soap & water!" I guess you just replace 'greasy particle' in the diagram above with the 'naughty' word? ;0) Of course, one wonders how this {http://www.newciv.org/pic/nl/gallery/17/big/216.gif} soap works also. I like Sandelwood soap the best. 17 Jul 2005 @ 10:37 by gea : I positively love that explanation! Silvia, this made my day, truly! Makes you look at things, at a simple bar of soap, in a totally new way! (I´ll be waiting to read more of this stuff, I bet you have more of it!) *grin* 17 Jul 2005 @ 11:39 by silviamar : :-) Jeff, exactly! I see that you got the picture! :-) Gea, sure I have more stuff hehe. It's a pity that at school we were not taught Chemistry in a more practical way, formulas and reactions can be very boring for students. 18 Jul 2005 @ 06:04 by jazzolog : We Have A Poet To Teach Us Chemistry No wonder I'm finally interested in learning this stuff. So, I have 2 questions: 1) Why does chemistry class smell so bad? 2) Who was the first human to discover soap? 18 Jul 2005 @ 08:42 by silviamar : to be a poet, to be a chemist... that is the question! :-) Jazzolog,the first question is easy to answer. The chem class smell so bad of course because most of the chemical compounds smell pretty bad and people forget to use the extracting hoods when opening the bottles :-) The worst ones are those very volatile. Hydrocarbons (compounds with carbon-carbon and carbon-hydrogen bonds) smell horrible, as well as the sulfured derivatives, which for example are responsible for the bad breath. When the receptors in our nose receive the impact of the molecules of these compounds, they send an unpleasant stimulus to the brain. Some others, as many esthers, smell pretty good and they are part of many fragances and perfumes. The second question is more difficult, as nobody really knows the answer. Regarding the origin of soap, there is a legend. It's said that it was discovered by chance in Rome after a heavy rain fall on the slopes of Mount Sapo, the water mixed with the animal fat and ashes around an important sacrificial altar, and then people observed that the mixture was useful to wash skin and clothing. But I think that there is documented use of soap as far back as 2500 B.C. The earliest known evidence of soap use are Babylonian clay cylinders dating from 2800 BC containing a soap-like substance. Questions are always welcomed :-) 10 Aug 2005 @ 17:39 by konchock : LINDO JABONCITO Hola Silviamar, interesante y simple explicacion, nunca se me ocurrió pensar por que el jabon limpia, ahora gracias a ti lo se. Lamento que la enorme mayoria de los participantes de esta red sean de habla inglesa, me cuesta mucho ya que en principio he sido un aotudidacta en idiomas y otras cosas. Bueno, un dia de estos te mando un mensaje presentandome, soy de santiago de chile y mi nombre es moris. gracias y hasta pronto 11 Aug 2005 @ 07:45 by silviamar : gracias konchock Me alegro de que te haya gustado el artículo, trato de que la gente entienda que la quimica es muy util en nuestra vida y que está en todas partes :-). Mándame el mensaje cuando quieras, encantada de conocerte. Había pensado en poner un apartado en mi newslog con los artículos que pongo traducidos al español, pero todavía no sé si sería una buena idea... Un saludo desde España. 4 Sep 2005 @ 18:37 by Kelly @4.152.144.56 : Thanks so much I've been looking for a simplified way to explain this concept to my middle school students (not being sure myself how soap works).I grealty appreciate your simplicity. 4 Sep 2005 @ 20:38 by silviamar : I'm glad to hear that this little article has been useful for somebody! When I have some time, I'll post more :-) 21 Jan 2007 @ 11:11 by Parminder Singh @74.111.46.38 : Helpful This website and article are very helpful. I was looking for something like this for a long time and I finally found this site. This site helped me out alot for my scince fair project. Thank-you so much and the article is so understandable!!!!!!!!!!!! ******* Hello! I'm glad that this article has been helpful for you! Thanks for your message. I like to bring science to everybody, so we all can understand better the world where we live :-) 23 Apr 2007 @ 02:42 by bb @218.111.177.194 : thx TQ.. i need to understand my organic chemistry (II), "lipids". i am comfuse about 'micellas' & 'emulsion'.... 17 Aug 2007 @ 07:49 by Jay Dee @155.238.8.15 : Esthers I have read about the topic, but i don't really follow the saponofication part of the chapter! I know that they have nice smells and the have sumthing to do with extraction of fat! 11 Dec 2007 @ 20:55 by casey thomas @66.210.57.9 : jkfjd this is very nice 11 Dec 2007 @ 21:01 by casey thomas @66.210.57.9 : jkfjd casey is a total duoch 21 Jan 2008 @ 20:56 by grace Griffin @74.36.109.4 : wow wow that is sooo cool now i want to find out more 2 Oct 2008 @ 21:46 by Bob Kowal @67.185.100.192 : Soap for Science Your site is awesome! I am a fifth grade teacher in Washington State and I am putting together a book on science for students to help them learn science and to make it easier for teachers to teach science. I am going to use the material in a workshop for teachers. I would permission to use a few paragraphs from your website. I will give credit to the site and I have ENCOURAGED teachers to visit your site. The section I want to use is "How does soap clean?". May I have permission to cite your site and put this to good use for teachers and students? Thank you. Sincerely, Bob Kowal. 30 Oct 2008 @ 00:06 by tayler @69.234.181.126 : THANKSSSSS thanks !! this was perfect for my school paper.. i got eveything i needed !!! thanks again !! 10 Aug 2010 @ 18:47 by CLAUDIA @67.67.133.15 : How can the loundry machine to clean?? Hello !! I studied this article, and I really like it, but I would like to know how or why why use the laundryt machine?? How it helps to clean? Is it rreally necesary>??? 1 Mar 2011 @ 17:32 by Omar @41.238.120.89 : science its the best explanation but is this the same as the soap of clothes ????plz answer as soon as possible ! 30 Mar 2011 @ 19:50 by Karl @64.30.14.50 : simply explanation thank you for this information it is easier to use this than some over extensive 42,000,000 volume online archive. 30 Nov 2012 @ 13:17 by ANNONYMOUS @218.250.86.95 : thanks! this was so helpful thank you 18 Nov 2013 @ 20:30 by This guy @24.249.117.154 : Chemistry Hey, look at me. 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17 Jul 2005 @ 09:27, by Silvia M.S