Question

Describe how freezing could be used to remove sugar from a mixture of sugar and water?

Answer 1

When the mixture (the sugar and water) is frozen, it separates. The water molecules get closer together, separating and pushing the sugar crystals to the top.<span />

Answer 2

Answer

Freezing can be used to separate sugar from a mixture of sugar and water if the solution is slowly cooled.

Explanation

Depending on the concentration of the sugar in the mixture, a separation can be attained if a slowly cooling process is performed. For example, if the solution is highly concentrated for example in a syrup solution, the mixture could be slowly cooled to allow the sugar to crystallize out. If the concentration is dilute but cooled slowly, pure water can crystallize first to leave a concentrated sugar solution until it freezes too.