chlorine

 **__Chlorine __**  1. 12.967Cl 2. 23.81Cl 3. 39.611Cl http://www.youtube.com/watch?v=Dpc5H9vVG2w
 * Symbol **: Cl
 * Atomic Number **: 17
 * Atomic Mass:** 35(18 Neutrons, 17 Protons)
 * Standard State **: Gas at 20C
 * Meaning **: The Greek word chloros which means green
 * Uses **:Chlorine can be used for many different things. Chlorine is commonly used for producing drinking water, paper products and petroleum products, Medicine, paints, plastics, and food
 * Biological Importance **: Chlorine has many biological uses. We use chlorine to help produce healthy and clean drinking water. We also use chlorine to help kill bad bacteria
 * Discovered By: **<span style="FONT-FAMILY: 'Arial','sans-serif'">Carl Wilhelm Scheele
 * <span style="FONT-FAMILY: 'Arial','sans-serif'">How it was discovered: **<span style="FONT-FAMILY: 'Arial','sans-serif'">Scheele mistakenly discovered it because he thought it contained oxygen
 * <span style="FONT-FAMILY: 'Arial','sans-serif'">Physical Properties: **<span style="FONT-FAMILY: 'Arial','sans-serif'">Greenish yellow gas <span style="FONT-SIZE: 16pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Arial','sans-serif'"> <span style="FONT-FAMILY: 'Arial','sans-serif'">
 * Chemical Properties:** Chlorine is a toxic gas.Chlorine is heavier than air so it will settle in low lying areas.If you breath in chlorine you will probably start to cough or vomit.Chlorine can react explosively with substances like ammonia, ether, hydrogen, and even some metals.
 * Link** Chlorine reacts explosively with hydrogen
 * Common Compounds****:** Sodium Chloride
 * Common Ions:**
 * Common Isotopes:**
 * Pictures:**
 * Video:**
 * More Information:**
 * Boiling Point:239K, -33.9C, -29
 * Was discovered in Upsalla, Sweden
 * Series: Halogen

http://www.ucc.ie/academic/chem/dolchem/html/elem/elem017.html http://www.webelements.com/chlorine/ http://periodic.lanl.gov/elements/17.html
 * Sources:** http://environmentalchemistry.com/yogi/periodic/Cl.html#Chemical

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