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In the winter in places with snowy, icy roads, crews spread salt (sodium chloride, calcium chloride or a salt mixture) on the roads to lower the temperature at which freezing occurs. The salt helps melt ice by forming a solution with a lower freezing point than that of pure water. With the Freezing Point Depression: How Low Can You Go?—ChemTopic™ Lab Activity, investigate the effect of dissolved solutes on the freezing point of a solution and determine which solute has the greatest effect on the freezing point.