P3+Halogen

Halogens

There are 5 elements in the group Halogens  The halogen group is made of solids, liquids, and gases. Astatine and Iodine are solids. Fluorine and Chlorine are gases. Bromine is a liquid. __Chemical Properties:__
 * Fluorine: group-17 period 2
 * Chlorine: group-17 period 3
 * Bromine: group-17 period-4
 * Iodine: group-17 period- 5
 * Astatine: group- 17 period- 6
 * Ability to oxidise.
 * Ability to corrose.
 * At room temperature some exist as diatomic molecules.

__Physical Properties:__ __Interesting Facts About Halogens: __   __Common Uses:__
 * Some are Metalloids.
 * Some are non-metal.
 * Some at room temperature exist as diatomic molecules.
 * 
 * <span style="color: #db1466; font-family: 'Comic Sans MS',cursive;">Iodine has radioactive isotopes.
 * <span style="color: #db1466; font-family: 'Comic Sans MS',cursive;">Bromine is used in producing gasoline.
 * <span style="color: #db1466; font-family: 'Comic Sans MS',cursive;"><span style="color: #db1466; font-family: 'Comic Sans MS',cursive;">Astatine is the heaviest of the Halogen series. [[image:gas.jpg align="left"]]
 * <span style="color: #db1466; font-family: 'Comic Sans MS',cursive;"><span style="color: #db1466; font-family: 'Comic Sans MS',cursive;"> Fluorine is used in toothpaste to help prevent tooth decay.
 * <span style="color: #db1466; font-family: 'Comic Sans MS',cursive;">Chlorine is used in pools to help keep them clean.

<span style="color: #db1466; font-family: 'Comic Sans MS',cursive;">Oxidise- to turn into a compound in which oxygen is bonded to one or more electropositve molecules (molecules that contain
<span style="color: #db1466; font-family: 'Comic Sans MS',cursive;">positive electricity) Diatomic Molecule- a molecule that has two atoms in it

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<span style="color: #db1466; font-family: 'Comic Sans MS',cursive;">__Sources:__
<span style="color: #db1466; font-family: 'Comic Sans MS',cursive;">"Visual Elements: Group 17 - The Halogens." //Royal Society of Chemistry, the largest organisation in Europe for advancing the chemical sciences//. Chemical Social Network. Web. 26 Oct. 2009. <http://www.rsc.org/chemsoc/visualelements/pages/data/intro_groupvii_data.html>.

"Facts about Bromine." //Facts About Everything! Arts, Literature, Science, History, Events, Entertainment, People, Places and the Natural World//. Web. 26 Oct. 2009. <http://www.facts-about.org.uk/science-element-bromine.htm>.

"Facts about Iodine." //Facts About Everything! Arts, Literature, Science, History, Events, Entertainment, People, Places and the Natural World//. Web. 26 Oct. 2009. []. "Facts About Astatine"//Facts About Everything! Arts, Literature, Science, History, Events, Entertainment, People, Places and the Natural World//. Web. 26 Oct. 2009. <http://www.facts-about.org.uk/science-element-astatine.htm>

Chaplin,Martin."Periodic Table of Elements." London South Bank University, Aug. 6th 2005. Dec.7 2008 [] Dr.Gregory L. Paskerian."ToothBrush and ToothPaste"The Health Report n.d **[]** Hobbico "Gas Pump" n.dhttp://www.modelmakerhobby.com/hcas9200.html