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Tired of doing the same ol' phase change lab where you melt ice and boil it on a hot plate? Sick of worrying about kids burning themselves on the hot plate? This lab is for you! It teaches students the opposite effect- taking water and turning it into ice. Students will use rock salt to turn liquid water into ice (similar to making homemade ice cream). Materials needed: Thermometer, beaker, test tube, rock salt, ice, water, and a stopwatch. It is a really easy and much safer version of the phase change lab! Students are responsible for collecting and graphing data.
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