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From Wiktionary under the GNU Free Documentation License. In chemistry, a chemical substance is a material with a specific chemical composition. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Some typical chemical substances are diamond, gold, salt (sodium chloride) and sugar (sucrose). Generally, chemical substances exist as a solid, liquid, gas, or plasma and may change between these phases of matter with changes in temperature or pressure. Chemical reactions convert one chemical substance into another. Forms of energy, such as light and heat, are not considered to be matter, and thus they are not "substances" in this regard. From Wikipedia under the
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Q. What chemical property of Group I cations allows the separation of the Group I from other cation groups? I am doing qualitative analysis lab and need help in answering this question. Thanks! Asked by shopaholic - Sat Jan 30 16:08:26 2010 - - 3 Answers - 0 Comments A. Haha, do you go to STLCOP? i tried googling the answer to this question, and just saw that you had asked it a day ago! I got that: Group I consists of ions that form insoluble chlorides... Answered by Noora - Mon Feb 1 19:35:11 2010 From Yahoo Answer Search: "chemical"  youtube.com Fri, 13 Apr 2007 04:48:30 PDT Chemical Brothers - Star Guitar. youtube.com.  youtube.com Mon, 19 Apr 2010 11:39:07 PDT Lyrics ... Chess game, I'm the pawn You're the queen, I'm the throne Take me out tonight Make your move, pick and choose Anywhere I ... youtube.com.  youtube.com Thu, 29 Jan 2009 21:23:26 PST "Galvanize" Don't hold back is the first single from The Chemical Brothers' 2005 album Push the Button. It was released a week ... youtube.com. From Google Video Search: "chemical" |
