https://padlet.com/MyahAshley/axr0ninxs2fu Moon. en-us 2016-11-07 18:03:26 UTC 2023-03-03 18:57:20 UTC hello@padlet.com MyahAshley https://padlet.com/MyahAshley/axr0ninxs2fu/wish/135879126 Selenium is often used in glass to give it a red color, which is useful for signal lights. 
Hydrogen selenide, (hydrogen and selenium) gives off a colorless, poisonous, foul-smelling gas.
Selenium is found in metal sulfide ore. 
It's used to protect cells from damage, so it is used in antioxidants.
This element is found in lobster, mushrooms, flounder, and shrimp.
It can actually decrease your risk of getting cancer. 
Crohn's disease is associated with low levels of selenium. 
Too much of this element leads to bad breath, as well as a metallic taste in the mouth. 
Selenium exists as silvery metal or powder, usually red.]]> 2016-11-07 18:11:50 UTC https://padlet.com/MyahAshley/axr0ninxs2fu/wish/135879126 MyahAshley https://padlet.com/MyahAshley/axr0ninxs2fu/wish/135881448 Atomic number : 34
Atomic mass : 79
Symbol : Se
Group : Oxygen 
Melting Point : 220.8°C
Boiling Point : 688 °C
Density : 4.79 g.cm-3 at 20°C
Abundance in Earth's Crust : 5×10-6%]]> 2016-11-07 18:16:59 UTC https://padlet.com/MyahAshley/axr0ninxs2fu/wish/135881448 MyahAshley https://padlet.com/MyahAshley/axr0ninxs2fu/wish/137153134

Berzelius' composition of selenic acid.

]]> 2016-11-12 20:18:32 UTC https://padlet.com/MyahAshley/axr0ninxs2fu/wish/137153134 MyahAshley https://padlet.com/MyahAshley/axr0ninxs2fu/wish/137153393 http://education.jlab.org/itselemental/ele034.html
https://www.britannica.com/science/selenium
http://www.webmd.com/a-to-z-guides/supplement-guide-selenium#1
https://www.youtube.com/watch?v=Un0GS0RTrxY
http://www.chemicool.com/elements/selenium.html

]]> 2016-11-12 20:24:18 UTC https://padlet.com/MyahAshley/axr0ninxs2fu/wish/137153393 MyahAshley https://padlet.com/MyahAshley/axr0ninxs2fu/wish/137153964 Selenium is a non metal, discovered in 1817. Jön Jacobs Berzelius was working in a sulfuric acid factory when he found an impurity in the acid. it was seen as a red-brown sediment. He originally thought it was tellurium, but later realized it was a new element. He named it after selene, which means moon, due to it's similarity to tellurium, which means earth.

]]> 2016-11-12 20:39:34 UTC https://padlet.com/MyahAshley/axr0ninxs2fu/wish/137153964 MyahAshley https://padlet.com/MyahAshley/axr0ninxs2fu/wish/137157309 2016-11-12 22:13:43 UTC https://padlet.com/MyahAshley/axr0ninxs2fu/wish/137157309 MyahAshley https://padlet.com/MyahAshley/axr0ninxs2fu/wish/137157858 Selenium is useful and required in order for humans to survive. Without it, people would die from lack of selenium. Considering it lowers your chance of getting some types of cancer, cancer rates would decrease as well. Many people take selenium just to better their health. It is an important factor in having a healthy immune system. Selenium also helps to reduce high cholesterol levels by a large amount. It even reduces the side effects of chemotherapy. Overall, selenium is very dangerous if it is taken in large amounts over a short period of time, but very much needed if it is used correctly. ]]> 2016-11-12 22:30:35 UTC https://padlet.com/MyahAshley/axr0ninxs2fu/wish/137157858