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Chemistry In Action
Transcript of Chemistry In Action
What Is A Basketball Made Of?
For everyone who mostly plays basketball indoor or outdoor uses a synthetic rubber covered basketball. They provide durability and moisture resistance than leather. Majority of basketballs use either a polyurethane or polyvinyl chlorides. Polyurethane costs the same as a regular leather ball. The polyvinyl chloride covered balls costs much less. Polyurethane is a synthetic resin in which the polymer units are linked by urethane groups, used chiefly as constituents of paints, varnishes, adhesives, and foams. Polyvinyl is a tough, chemically resistant synthetic resin made by polymerizing vinyl chloride and used for a wide variety of products including pipes, flooring, and sheeting.
Why Do Onions Make You Cry?
Onions produce the chemical irritant known as syn-propanethial-S-oxide. It stimulates the eyes lachrymal glands so they release tears. As onions are sliced cells are broken allowing enzymes to break down amino acid sulphoxides and generate sulphenic acids.
The process goes as follows:
Lachrymatory-factor synthase is released into the air when we cut an onion.
The synthase enzyme converts the sulfoxides (amino acids) of the onion into sulfenic acid.
The unstable sulfenic acid rearranges itself into syn-ropanethial-S-oxide.
Syn-propanethial-S-oxide gets into the air and comes in contact with our eyes. The lachrymal glands become irritated and produces the tears.
Main Chemicals and Compounds
polyester: Ethylene Glycol + Adipic Acid ---------> Polyester
Rubber: BIIR - bromobutyl rubber
What Are These Compounds?
Nylon is made from from carbon, nitrogen, and hydrogen.
Polyester is a polymer that has ester functional group in its main chain.
Rubber is an elastomer, which means it can undergo deformation under great stress.
This is a picture of half of an onion that I cut. The chemicals from the onion will then irritate your eye.
"Why Does Chopping Onions Make You Cry?" Why Does Chopping an Onion Make You Cry? (Everyday Mysteries: Fun Science Facts from the Library of Congress). N.p., n.d. Web. 07 Nov. 2013.<http://www.loc.gov/rr/scitech/mysteries/onion.html>
"How Products Are Made." How Things Are Made. N.p., n.d. Web. 07 Nov. 2013. <http://www.madehow.com/Volume-6/Basketball.html>.