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The Old Nassau reaction or Halloween reaction is a chemical clock reaction in which a clear solution turns orange and then black. This reaction was discovered by two undergraduate students at Princeton University researching the inhibition of the iodine clock reaction (or Landolt reaction) by Hg 2+ , resulting in the formation of orange HgI 2 .
She teaches general chemistry and scientific literacy to classes of five hundred students. [4] [9] After a few months, she created the program Fun with Chemistry, [10] which introduces elementary, middle and high school students to chemistry experiments. [4] [11] The program reaches more than 20,000 students every year. [4]
Pharaoh's serpent demonstration. The Pharaoh's snake is a more dramatic experiment and it requires more safety precautions than the sugar snake due to the presence of toxic mercury vapor and other mercury compounds. [1] This reaction was discovered by Friedrich Wöhler in 1821, soon after the first synthesis of mercury thiocyanate. It was ...
Growling Gummy Bears video "Screaming Jelly Babies" (British English), also known as "Growling Gummy Bears" (American and Canadian English), is a classroom chemistry demonstration in which a piece of candy bursts loudly into flame when dropped into potassium chlorate. [1]
Lieutenant Colonel Brian Duncan Shaw, MM, TD (10 February 1898 – 7 November 1999) was a British chemistry lecturer at the University of Nottingham, [3] known for his demonstrations on explosives. [ 4 ]
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California Gov. Gavin Newsom ordered state agencies to recommend ways to reduce health harms and limit the purchase of candy, soda and other ultra-processed foods.
Hubert Newcombe Alyea (October 10, 1903 – October 19, 1996) [1] was an American professor of chemistry at Princeton University. His explosive chemistry demonstrations earned him the nickname "Dr. Boom". He was famous around the world for his "zany, eccentric" public lectures on science, which "were as much performance as professorship". [2]