5)+Iodine+Leena+A.

__ I o d i n e __ Introduction: Iodine was discovered in the nineteenth century, during the war between France and England. The french needed gun powder but the British naval blackade blocked them from recieving many needed imports. So, a french chemist that goes by the name of Bernard Courtois made a new process that required large quantities of sodium carbonate. He tried a new technique to obtain sodium carbonate, he used the ashes of burned seaweed because at the time wood was scarce. So, one day when he was cleaning the seaweed pans using concentrated sulfuric acid, Bernard saw a violet-coloured vapour rising from the pans, and when he saw it touch the surface it became a solid. That all led to the formation of dark purple crystals, thus the discorvery of what we call now, Iodine. Sadly, Bernard Curtois was too involved in the war to put his discovery out into the public, but instead he shared his purple solids with other chemists to study. Finally, Joseph Gay-Lassad and Humphrey Davy announced that this substance was a brand new element with properties close to those of chlorine. 

What Can Iodine Be Used For?: Iodine can be used as medical treatments, it is used for the preperation for some drugs. It can also be used in printing inks, dyes, water purification tablets, photographic film, cloud seeding, and in element like titanium.An important use of iodine that i would like to go into detail about is animal feed, where EDDI is made as a nutrional supplement for livestock. But, the most major use of iodine would be in co-catalyst which makes acedic acid for most of the world's demand. Most of these involve iodine turning into iodide.

Iodine In Our Environtment: Iodine is found in oceans, some sea fish, and water plants. It surrounds us every day, as it is in our soil, air, and water! It's also found unnaturally because it is added to almost every salt that is applied! Iodine is also apart of our biocycle, because 400 thousand tons of iodine comes out of the oceans every year from marine animals and it is deposited on land. It surrounds our globe, because places such as Russia, Japan, Chile, New Mexico where it is either found, extracted, or produced! All in all, iodine surrounds us every day because it is in our enviroment.

Enviromental Affects Of Iodine: Now you know for a fact that iodine is in our environment on a day to day basis, but now let's find out the affects of iodine in our environment. As mentioned before iodine is in our soil, plants that grow on these soils can also absorb this iodine and so can animals when they eat these plants. It is infact important to have iodine, depending on the type of radioactivty of course. Human's can contribute iodine gas into the air by the burning of coal, or fuel oil for energy. But, comparably the amount of iodine that is added to the air from humans is less than the amount the oceans contribute by vaporizing. An important factor to know is that iodine can be radioactive, they are formed naturally from chemical reactions in the air. The good thing is that most radioactive isotopes dont live very long until they quickly become stable iodine compounds. The bad part is that there is a form of a radioactive iodine that lives very, very long and is extremely harmful to the environment. An example would be nuclear power plants, because some accidents have resulted in large amounts of radioactive iodine being released which is very harmful to the environment!

How Iodine Affects Your Health: Iodine is essential for your growth, nervous system, and metabolism! If you're wondering why it's because it is the building material for your thyroid hormones. Bread is a very important factor in retaining iodine, and humans who don't eat enough bread usually have iodine shortages which lead to health issues. Their thyroid gland will swell up, and it's function will slow down, this is reffered to as iodine deficiency. But, too much iodine is also very bad for you because your thyroid gland will feel (im simplest terms) overwhelmed. This can cause you to lose a lot of weight, and have disturbed heartbeats. Some types of iodines like, I2 are toxic and can harm your lungs and eyes, and others such as iodine 131 which can increase the risk of cancer and other diseases. Because iodine can cause you to loose weight, due to it's ability to control the metobolic rate, many people look towards it to diet but overlook the horrible diesease causing consequences.

**Functions of Iodine in the your body**
 * Important component of thyroxine, which controls the metobolic rate
 * Mandatory to develop the foetal of the nervous system
 * Can protect you against radiactivity
 * Can regulate the syptoms of oestrogen on breast tissue
 * A needed component to have healthy connective tissue

Bibliography: [] [] [|http://en.wikipedia.org/wiki/Iodine#Toxicity_of_iodide_ion] [] []

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<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Pratheep: Super Glue <span style="font-family: 'times new roman','serif'; font-size: 16px;">1) Cyanoacrylate is used to put electronics together, wire wraps, and coverings for things such as bolts.  <span style="font-family: 'times new roman','serif'; font-size: 16px;">2) When gases from cranoacrylate vaporize they are a form of a cyanoacrylate molecule that can irritate your eyes, nose, and throat. <span style="font-family: 'times new roman','serif'; font-size: 16px;">3) Super glue can fix objects, and wounds that you get on your body as well.  <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Osama: The combustion of hydrocarbons   <span style="font-family: 'times new roman','serif'; font-size: 16px;">1) Most fuels are made of organic compounds, an example of an organic compound is propane because it has one or more carbon-carbon bonds, and is a molecular. <span style="font-family: 'times new roman','serif'; font-size: 16px;">2) The combustion of hydrocarbons can be divided into two groups, complete and incomplete and this depends on what kind of product is formed.  <span style="font-family: 'times new roman','serif'; font-size: 16px;">3) Hydrocarbons can pollute the air, and it's toxins can cause very serious health problems. <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Kavishka: neutralizing stomach acids <span style="font-family: 'times new roman','serif'; font-size: 16px;">1) The acid that is in our stomach is called hydrochloric acid, and these acids are made from the cells in our stomach lining.  <span style="font-family: 'times new roman','serif'; font-size: 16px;">2) Stomach acids can be extremely harmful to us if they go into our esophagus and this occurs when you get a heart burn which is also known as acid reflex. <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">3) Gastric acids can be neutralized by use of Antacids; which is a kind of base that is useful in neutralizing stomach acids.