Elementary Science
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Objective 3 -Physical Science
 
 

 

 

5.7C - Identify changes that can occur in the physical properties of the ingredients of solutions such as dissolving sugar in water.

In an activity, 20 grams of salt are dissolved in 70 grams of pure water. The water is then heated on a
hot plate. When the water evaporates completely, how much salt will be left?


A 0 grams
B 18 grams
C 20 grams
D 22 grams

Crystals were grown on a string in a clean glass jar containing sugar dissolved in hot water. The
crystals grew on the string for several weeks. What kind of crystals are they?


F String
G Water
H Glass
J Sugar