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Chapter 5, Lesson 6 Multimedia

Salt & Sugar in Hot and Cold Water

Salt is dissolved in two graduated cylinders, one containing hot water and the other containing cold water. The is no discernible difference in the amount of salt dissolved in water at different temperatures.Sugar is dissolved in two graduated cylinders, one containing hot water and the other containing cold water. Far more sugar dissolves in the hot water than dissolves in the cold water.
  • The same amount of salt is added to hot and cold water. There is not much difference in the amount of salt that dissolves in the hot and cold water.
  • The same amount of sugar is added to hot and cold water. More sugar dissolves in the hot water than the cold water.

Solubilty of Salt and Sugar

A graph in which grams of solute dissolved is plotted against temperature.  The curve that represents sugar's solubility over a wide temperature range increases greatly, while the curve that represents salt hardly increaseas at all.
  • As the temperature increases, the number of grams of sugar that dissolves in water increases significantly.
  • As the temperature increases, the number of grams of salt that dissolves in water increases only slightly.