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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 .
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]
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 ...
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]
The program starred Paul Zaloom as Beakman, an eccentric scientist who performed comical experiments and demonstrations in response to viewer mail to illustrate various scientific concepts from density to electricity to flatulence. When his experiments were successful, he would often exclaim "Zaloom!" in a nod to his last name.
Elephant toothpaste reaction Two people watching the reaction of Elephant's toothpaste. Elephant's toothpaste is a foamy substance caused by the quick decomposition of hydrogen peroxide (H 2 O 2) using potassium iodide (KI) or yeast and warm water as a catalyst. [1]
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2 Chemistry. Toggle the table of contents. ... This is a list of scientific demonstrations used in educational demonstrations and popular science lectures. Physics