Screaming jelly babies
"Screaming jelly babies" (en-UK), also known as "Growling gummy bears" (en-US/en-CA), is a classroom chemistry demonstration, variants of which are practised in schools around the world. It is often used at open evenings to demonstrate the more light-hearted side of secondary school science. The experiment shows the amount of energy there is in a piece of candy; jelly babies or gummy bears are often used for theatrics. Potassium chlorate, a strong oxidising agent, rapidly oxidises the sugar in the candy, causing it to burst into flames, producing a "screaming" sound as rapidly expanding gases are emitted from the test tube. The aroma of candy floss (cotton candy) is also given off.
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- Lubbock Christian University: Can a Gummy Bear Scream?
- "5.5 Oxidation of Sugar or Gummi Bear with Potassium Chlorate". Chemical Reactions II: Oxidation/Reduction. University of Massachusetts Lecture Demonstrations. Retrieved 22 March 2014.
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- The howling/screaming jelly baby (PDF) (Report). CLEAPSS. Supplementary Risk Assessment 01. Retrieved May 14, 2013.