Thursday, May 13, 2010

Dry ice experiments







Today, the staff led the students through some really cool dry ice experiments. First, we demonstrated what dry ice did in water. Some of the comments were "like at a rock concert" or "at halloween!" Next, we did a cup filled with water and dry ice, topped with a sheet of paper towel ladened with soap. This formed a really big bubble that grew and grew and suddenly popped when it was full of carbon dioxide. We also carbonated several beverages, such as a sports drink, lemonade and apple juice. We added some cardice to diet coke, and it went flat. We took a bottle and put some dry ice in it without water. This filled the balloon with CO2. Next, Mrs. Williams filled a balloon with CO from her lungs. When asked which one would fall faster, the kids thought it would be the CO one, but they were incorrect. The CO2 balloon fell much faster!!!!!

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