introduce me  some sites about chemestry?
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I think you mean "chemistry"... I don't know any sites off hand but you can always just try a search engine, like Yahoo and search for chemistry.\nOr is there something called "chemestry" that I don't know about yet.
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fnac.com\ncarrefour.com\nfff.com
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http://www.chem4kids.com
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Calorimeter Info center\n\nhttp://www.scipeeps.com/Sci-Chemistry_Topics_C_-_Cl/Calorimeter.html
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http://www.chemtutor.com/\nthis was a site that helps all in the basics That is how i learned it.
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Check out a couple websites
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www.danmarproducts.com\nwww.plument.com
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www.mrl.ucsb.edu/~cheetham/pdf_items/pub_38.pdf\n\nScroll down several articles
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I was recently looking at one that contains many applets that help to visualize the structure of many compounds and atomic latices. (See 1st link, below)\n\nBut that may not be what you're looking for. If you could narrow your question down to a certain part of chemistry or a certain reaction, etc... that would help.\n\nIf not, then the second link is a cool site that has many interesting easy-to-understand concepts accompanied by some fun applets. (See 2nd link, below)
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please visit this web for chemistry www.acdlab.com \nis best for chemistry
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Best damn site period.  I use it all the time.\n\n\nhttp://www.advancedphysics.org/
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I recommend these sites:\nhttp://www.sciencemag.org/\nhttp://www.sciencenews.org/\nhttp://www.sciencedaily.com/
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http://www.chemicool.com/
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http://www.greenday.com/greenday.html\nhttp://www.mychemicalromance.com/
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a phd student in chem looking for basic chem material on the web.\n\nright.\n\nstart here: http://www.carleton.ca/~rburk/chem1000\n\na textbook might also be useful.
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Try going here http://www.spoono.com/ . They have a lot of interesting stuff.
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Refer to IUPAC's web site iupac.chemsoc.org or search on Google.