Chlorine

 __CHLORiNE__ WHAT iS CHLORiNE? Chlorine is a [|halogen] element and is found in some household items. It is sometimes in the form of a poisonous gas. When it is pressured and cooled it can be turned into a liquid. Chlorine is easily recognized by it's irritating smell that is similar to bleach. The smell makes a good warning that it is exposed. Chlorine is originally a yellow-green color and it is not flammable, but can be mixed with other chemicals to make explosive compounds.[1] [2] This picture is of a girl swimming in a chlorine cleaned pool. GRAY AREA In the gray area fish are dying out and chlorine is one of the possible reasons for the population depleting. Ken Unballe is the owner of the water slide that is by the Fo River. Tests were taken in the water to see if chlorine was a possible hazard to the fish and some contradictory results were found. The chemical test taken on tuesday night showed that there was no chlorine in the river. On the contrary, biological tests* were taken and the daphnia count was very low, signaling that there is most likely traces of chlorine in the water. A possible reason for the chemical results being incorrect could be when the tests were taken.[7] HOW CHLORiNE iS USED? Chlorine is used a lot of times in pesticides and is most commonly found in pools and drinking water to kill bacteria. It is also used a lot to sanitize industrial waste and sewage. Chlornine can also be used to make rubber and solvents. Chlorine is one of the most manufactured chemicals in the USA.[1] [8] HOW CHLORiNE AFFECTS THE ENViRONMENT Chlorine can make many changes to the environment in many different ways.Chlorine can be an extremely toxic substance or gas and is able to kill many animals. If there is a chlorine spill in a body of water that supports living organisms, then it will most likely deplete the population. You can verify that the chlorine is affected the water by counting the daphnia Chlorine also helps us by cleaning the water that we drink from, so its not just bad. Chlorine affects the enviroment positively and negatively.[1] HOW IS CHLORINE PRODUCED? Chlorine is made by passing an electric current through a solution of salt dissolved into water (which is called brine). [3] <span style="font-size: 18pt; color: #030303; font-family: Impact, Charcoal, sans-serif;">SOME COOL FACTS ABOUT CHLORiNE <span style="font-size: 14pt; color: #585151; font-family: Arial, Helvetica, sans-serif;">Chlorine rarely does exist by itself in nature. An interesting place it can be found though is in human tears.[3]When the yellowish reddish gas called chlorine is set at a tempature of -59 degrees celcius it will start to crystallize into amazing orange crystalls.[5] Chlorine has the physical form of a diatomic* green gas and is two and a half times as heavy as air.[6] *Diatomic- Having two atoms in a molecule. <span style="font-size: 10pt; color: #585151; font-family: Arial, Helvetica, sans-serif;">media type="custom" key="2960665"[4] chlorine gas to form sodium chloride (table salt).**
 * Biological tests- When the daphina in the water is counted. If there is a high daphnia count then the water is in good condition. For daphnia click hyperlink in "How Chlorine Affects the Enviroment"
 * A reaction between molten sodium metal and

<span style="font-size: 14pt; color: #585151; font-family: Arial, Helvetica, sans-serif;"> resources [1]Centers for disease control and prevention, comp. "CDC facts about chlorine." __Centers for disease control and prevention__. 18 Mar. 2003. USA gov. 18 Dec. 2008 [2] [|www.google] images.com [3] "How is chlorine made?" __Chlorine online information research__. Euro Chlor. 7 Jan. 2009 <http://www.eurochlor.org/makingchlorine>. [4] "Soduim plus chlorine." __Www.teachertube.com__. 7 Jan. 2009 http://www.teachertube.com/view_video.php?viewkey=0be2dabbb91b65ed3317&page=1&viewtype=&category=. [5]"Chlorine dioxide." __Wikipedia__. 9 Jan. 2009 http://en.wikipedia.org/wiki/Chlorine_dioxide. [6] __Lenntech Chlorine-CI__. 2008. 8 Jan. 2009 <http://www.lenntech.com/periodic-chart-elements/cl-en.htm>. [7] Sonnenberg, Chris Enviormental Detective Notebook. Cincinnati: Nagel Middle School, 2008 [8] 9 Jan. 2009 <http://www.green-planet-solar-energy.com/images/chlorine-gas.gif>.