Tanner Ballance
Science 8-2
Oct 20th
The most common compound of chlorine, sodium chloride, has been used and recognized since ancient times, even as far back as 3000BC. In 1630, chlorine was recognized as a gas by Jan Baptist Van Helmont, a Flemish chemist and physician. In 1774, the element chlorine was first prepared and studied by Swedish chemist Carl Wilhelm Scheele. He got the gas through the reaction of the mineral pyrolusite (manganese dioxide, MnO2) with hydrochloric acid (HCl, then known as muriatic acid). Sir Humphrey David declared chlorine an element in 1810. He was also the person the person responsible for naming the element. Chlorine was named from the greek work "chloros"which means pale green, because of its color. In 1847, chlorine was used as a disinfectant in Vienna, Austria to prevent the spread of child bed fever. In 1890, chlorine was implemented into almost all water purification systems in England. Chlorine is most commonly used as an antiseptic, to cleanse drinking water, treat swimming pools, in the production of paper, plastics, dyes, textiles, solvents, and paints. Chlorine, also known as bertholite, was was first used as a chemical gas warfare product in World War I by the Germans. The smell of this gas was described as a mixture of paper and pineapple. Chlorine gas has also been used by terrorists in the Iraq War against the civilian population. Chlorine is highly reactive in its natural state. In order to be safe chlorine is turned into a compound to be used such as sodium chloride (salt).The abundance of chlorine in the universe is 0.0001%, it is the 21st most abundant element in the universe. Chlorine is the second lightest halogen, second to fluoride. Second means is has the least amount of protons and neutrons in its nucleus.
Videos:
https://www.youtube.com/watch?v=aa4tR7qtqdE
https://www.youtube.com/watch?v=KmYNOe5h8VU
Sources:
Emsley, John. The Elements. Oxford: Clarendon, 1998. Print.
Kean, Sam. The Disappearing Spoon: And Other True Tales of Madness, Love, and the History of the World from the Periodic Table of the Elements. New York: Little, Brown, 2010. Print.
Levi, Primo. The Periodic Table. New York: Schocken, 1984. Print.
"Chlorine: Historical Information." Chlorine»historical Information [WebElements Periodic Table]. N.p., n.d. Web. 28 Oct. 2015.
http://education.jlab.org/itselemental/ele017.html
Science 8-2
Oct 20th
The most common compound of chlorine, sodium chloride, has been used and recognized since ancient times, even as far back as 3000BC. In 1630, chlorine was recognized as a gas by Jan Baptist Van Helmont, a Flemish chemist and physician. In 1774, the element chlorine was first prepared and studied by Swedish chemist Carl Wilhelm Scheele. He got the gas through the reaction of the mineral pyrolusite (manganese dioxide, MnO2) with hydrochloric acid (HCl, then known as muriatic acid). Sir Humphrey David declared chlorine an element in 1810. He was also the person the person responsible for naming the element. Chlorine was named from the greek work "chloros"which means pale green, because of its color. In 1847, chlorine was used as a disinfectant in Vienna, Austria to prevent the spread of child bed fever. In 1890, chlorine was implemented into almost all water purification systems in England. Chlorine is most commonly used as an antiseptic, to cleanse drinking water, treat swimming pools, in the production of paper, plastics, dyes, textiles, solvents, and paints. Chlorine, also known as bertholite, was was first used as a chemical gas warfare product in World War I by the Germans. The smell of this gas was described as a mixture of paper and pineapple. Chlorine gas has also been used by terrorists in the Iraq War against the civilian population. Chlorine is highly reactive in its natural state. In order to be safe chlorine is turned into a compound to be used such as sodium chloride (salt).The abundance of chlorine in the universe is 0.0001%, it is the 21st most abundant element in the universe. Chlorine is the second lightest halogen, second to fluoride. Second means is has the least amount of protons and neutrons in its nucleus.
Videos:
https://www.youtube.com/watch?v=aa4tR7qtqdE
https://www.youtube.com/watch?v=KmYNOe5h8VU
Sources:
Emsley, John. The Elements. Oxford: Clarendon, 1998. Print.
Kean, Sam. The Disappearing Spoon: And Other True Tales of Madness, Love, and the History of the World from the Periodic Table of the Elements. New York: Little, Brown, 2010. Print.
Levi, Primo. The Periodic Table. New York: Schocken, 1984. Print.
"Chlorine: Historical Information." Chlorine»historical Information [WebElements Periodic Table]. N.p., n.d. Web. 28 Oct. 2015.
http://education.jlab.org/itselemental/ele017.html
