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You can make chalk do something really weird just by heating it super hot. Chalk is made of calcium carbonate, and heating it causes the chalk to decompose into carbon dioxide gas and calcium oxide, or lime. If you keep heating the lime to about 2500 C it will begin to glow with a blinding white light. This “limelight” is the result of candoluminescence and calcium oxide was used in theatres in the 19th century in calcium lights to illuminate the stage. So when an actor was illuminated by a calc
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You can make chalk do something really weird just by heating it supe…
9.3M viewsSep 16, 2023
TikTokchemteacherphil
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