chemicalDefinition from Wiktionary, the free dictionary Jump to: navigation, searchFrom 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
GNU Free Documentation License What are 5 examples of of chemical transformations that you make use of in your daily activities? Q. We use chemical reactions in our everyday lives, not just in the laboratory. Give at least 5 examples of of chemical transformations that you make use of in your daily activities. Indicate what the "chemical" is in each example and how you recognized that a chemical change has taken place. Asked by mc - Fri Aug 14 22:30:07 2009 - - 2 Answers - 0 Comments A. breathing, burning gas when i drive, eating can't think of any more! Answered by hecsurf93 - Fri Aug 14 23:01:15 2009 What is the chemical reaction that occurred during the Hindenburg disaster? Q. I just want to know the chemical reaction that occurred during the Hindenburg disaster. I know it had to do with static electricity and hydrogen gas, but I don't know the exact chemical reaction. Help! Asked by NeedsChemHelp - Sat Oct 25 12:45:18 2008 - - 1 Answers - 0 Comments A. Ironically, the rxn was H2 + 1/2O2 -> H2O. However, not enough water was created to quench the flames of the exploding hydrogen, although the moving pictures of the disaster clearly show the water. Answered by cattbarf - Sat Oct 25 12:54:34 2008 What chemical do you think is the most interesting?
Q. I have to do a project in chemistry on any chemical. However, I am having trouble choosing, so please give me ideas. Please avoid water and illegal substances. Medications are okay though. Thank you for the ideas! Asked by kyokuncatlover - Tue Apr 6 20:35:29 2010 - - 2 Answers - 0 Comments A. Benzene. The shape of the molecule was an enigma until the German chemist Friedrich August Kekule dreamed of a snake biting its own tail, making him realize that benzene was a ring. Answered by Vincent G - Tue Apr 6 20:43:01 2010 From Yahoo Answer Search: "chemical"  cnettv.cnet.com Sun, 01 Aug 2010 18:46:40 PDT The effort to skim, burn and break down oil in the Gulf with chemical dispersants is proving effective but there are concerns about the possible ... cnettv.cnet.com.  youtube.com Tue, 06 Apr 2010 03:30:42 PDT Pre-order 'Further' iTunes LP - links.emi.com Amazon UK - links.emi.com Rest of the world - links.emi.com Official Listening Post for the ... youtube.com.  youtube.com Mon, 19 Nov 2007 03:57:03 PST For more MCR go to: www.nme.com Gerard Way invited NME Video into My Chemical Romance's dressing room just before they were about to go on ... youtube.com. From Google Video Search: "chemical"  pennystocklive.com Tue, 07 Sep 2010 18:14:03 GMT+00:00 Companies FMC Corp. (FMC), NuEarth Corp. (NUEC ... Penny Stock Live (blog) FMC Corporation (NYSE:FMC) has entered into a development and distribution agreement with Kumiai Chemical Industry Co., Ltd., and Ihara Chemical Industry ...  ars.usda.gov Tue, 07 Sep 2010 12:38:08 GMT+00:00 Agricultural Research A US Department of Agriculture (USDA) scientist and his colleagues have discovered key gene and chemical interactions that allow ...  bloomberg.com Thu, 02 Sep 2010 14:21:25 GMT+00:00 Bloomberg An IPO of Univar shares was planned by CVC, which received interest in the chemical distributor from private-equity investors, according to the statement. ... Clayton, Dubilier & Rice Announces Agreement with CVC Capital Partners to ... PR Newswire (press release) From Google News Search: "chemical"  aquadyne-waste-water.com 166px x 250px | 17.60kB [source page] Chemical Solutions Aquadyne will thoroughly examine your existing water or wastewater treatment program and through laboratory and on site testing specify a treatment program that will achieve compliance  nd.gov 497px x 663px | 44.20kB [source page] Look at Me I Can Be Lake Region State College LRSC In an effort to combat the limited exposure to nontraditional careers that results from living in a rural setting Lake Region State College endeavored to expose students firsthand to From Yahoo Image Search: "chemical"  thetruthaboutmcs.blogspot.com MCS America Wed, 01 Sep 2010 22:48:00 GM The mission of MCS America (MCSA) is to propagate medical, legal, and social recognition for multiple . chemical. sensitivity (MCS) as a disorder of organic biological origin induced by toxic environmental insults; to provide support and ... From Google Blog Search: "chemical" |
