Photo courtesy of Peter Bruecken
Description: A: Balloons filled with hydrogen alone, oxygen alone, and a mixture of hydrogen and oxygen are ignited. B: Soap bubbles are made with varying concentrations of hydrogen and oxygen and then ignited C: A special cannon is filled with a mixture of hydrogen-oxygen, corked, and ignited, using a spark-plug built into the cannon.
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Source: Shakhashiri, B.Z. Chemical Demonstrations: A Handbook for Teachers of Chemistry
Year or vol: 1 page: 106
Keywords: Hydrogen, Exothermic, Oxygen, Soap Bubbles