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Changes Unit Kit

Item # 971801AV Exclusive



This item will ship on or about 6/5/17

Initial activities in the unit expand students' understanding of solids, liquids, and gases by exploring changes in state. Students consider the changes to a single substance-water-as they observe it freeze, melt, evaporate, and condense. Then, through a sequence of lessons, they investigate changes involving mixtures. Student pairs produce mixtures of 2 solids and of solids with liquids and they observe and compare the changes that result. They also set up "dissolving races" with sugar and water, in which they observe the effects of sugar particle size and water temperature on the rate at which the sugar dissolves.

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