• If you are citizen of an European Union member nation, you may not use this service unless you are at least 16 years old.

  • You already know Dokkio is an AI-powered assistant to organize & manage your digital files & messages. Very soon, Dokkio will support Outlook as well as One Drive. Check it out today!

View
 

Iodine - Lab 1 - Sarah Zambrano

Page history last edited by Sarah Zambrano 4 years, 2 months ago

Iodine

 

Iodine

 

     The chemical element iodine has atomic number 53 and is represented simply by the symbol I. It has an atomic mass of 126.904. It has 53 electrons, 53 protons, and 74 neutrons. When it is in a solid state, it is a grey/black/dark-purple color.

     Iodine does not melt on its own when heated, but instead sublimes, which means it turns directly into a gas from its solid state. Iodine gas is violet in color and has a strong odor. If something cold comes into contact with iodine gas, the iodine turns back into solid crystals. With the right liquid and conditions, iodine can melt at 113.5 °C and boil at 184 °C.

     Iodine is an active element and it forms compounds with other ingredients. It is a nonmetallic element. It is part of the halogen chemical element group, which means it forms a strongly acidic compound with hydrogen. This compound can then be made into simple salts.

     Every human body requires a small amount of iodine. It converts into thyroxine in the thyroid gland and is needed for maintaining normal metabolism. Iodine is added to table salt to help people avoid having an iodine deficiency, although most drinking water has the sufficient amount needed. Most bodies contain 14mg of iodine. Iodine is also frequently used as an antiseptic and disinfectant in hospitals before surgery, when it is mixed with alcohol and water with potassium iodide. 

 

Sources:

https://www.britannica.com/science/iodine

http://www.chemistryexplained.com/elements/C-K/Iodine.html

https://www.britannica.com/science/halogen

 

Comments (1)

Mitch Albers said

at 7:26 pm on Jan 23, 2020

Nice job!

You don't have permission to comment on this page.