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It’s elemental at chemistry show

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Dr. Kate “The Chemist” Biberdorf produces fire, plumes of dry ice, foaming goo and a lot of enthusiasm from youth when she does her chemistry demonstrations. She was one of the main presenters at the Oct. 13 Science and Art Festival organized by the Roswell Museum and Art Center. Above: 1) Biberdorf produces fire by igniting sodium percarbonate. Below: 2) Making gummy worms. (Lisa Dunlap Photos)

3) Just one of the stages of creating elephant toothpaste.

4) Balloon animals grow unwieldy with liquid nitrogen.

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5) Expanding gel comes from a few drops of food coloring, water and sodium polyacrylate, better known as diaper filling.