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Post by katee on Mar 18, 2009 20:41:13 GMT -5
Katee had every right to be nervice because she was about to combine sulfuric acid and hydrofluoric acid to salt water! She didn't know what was going to happen but she knew she would surely flunk if she didn't do this presentation to her chemistry class adn professor. The last drop of acid poured in and BOOM! rainbow bubbles started to fly up out of the flask and up into the classroom. When they exploded they left behind mini rainbows! "Great job Katee. You got a B+!" Katee jumps up and down to her seat proud of her grade. She waited for the next soul to go. so who's next?
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Post by selena on May 20, 2010 20:42:34 GMT -5
Selena walked to the front of the room, a wooden tray held carefully in her hands. She smiled as she placed it on the available table. There was a light pink sheet over the inhabitants of the tray, and Selena left it there for a moment as she addressed the waiting class. "It isn't very original," she began slowly. "But it is something that my host has always wanted to experiment with, and I thought that perhaps we should learn just a little more about them. Apparently, this experiment is very popular for elementary grade students who enter science fairs. Personally, and although I've done it twenty-three times previously, it's fascinating." She whipped the sheet off in a fluid movement and revealed a small mound of hardened flour. "This is a baking soda volcano," she announced. "Its elements consist of flour, water, food coloring, detergent, baking soda and -" she picked up a bottle of clear liquid "- vinegar. The vinegar creates the simulated 'eruption.'" And, so saying, Selena poured in a somewhat large amount of vinegar to the mixture. The professor had walked over as she explained the 'volcano' and currently had his nose over the top of the cone, to get a better view of what was happening. "I wouldn't -" Selena began to warn him, but - alas - she was too late. The volcano erupted and sent a spray of liquid into the professor's faces. Selena's hand flew to her mouth as she suppressed a giggle. She only just managed to control herself as she carefully placed her hands over the top, so that the imitation lava flowed down to the base of the structure.
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