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Everyday dissolving
Words to learn: dissolve • solution • dissolved • evaporate
Sugar seems to vanish in water. Has it really disappeared?
WHAT DOES DISSOLVING MEAN?
When sugar or salt dissolves in water, it seems to disappear. It has not gone: tiny particles of the substance have spread throughout the water.
WHERE DOES IT GO?
The water and the dissolved substance make a solution. A clear solution can contain a surprising amount of material even though we cannot see it.
CAN WE GET IT BACK?
Often we can. If the water evaporates, the dissolved solid can be left behind. Dissolving has not destroyed the material.
WHAT YOU NEED TO KNOW
INVESTIGATING DISSOLVING.
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