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Frozen Salt - The NEED Project

2013 The NEED Project Box 10101, Manassas, VA 20108 SaltGrade Levels: 7-10 BackgroundMatter comes in three forms: solid, liquid, and gas. Solid water is called ice. It becomes ice through freezing. When ice is melted it becomes liquid. If liquid water is heated, it becomes a gas, or steam. When you change a solid to liquid or liquid to gas, or even a liquid to a solid, energy must be added or removed. Some materials need more energy to freeze or melt than others. ? QuestionWhat does salt do to the freezing point of water? Possible HypothesisAdding salt _____ the freezing point of water.

©2013 The NEED Project P.O. Box 10101, Manassas, VA 20108 1.800.875.5029 www.NEED.org Frozen Salt Grade Levels: 7-10 Background Matter comes in three forms: solid, liquid, and gas.

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