Solids can either be soluble or insoluble.
Soluble – means when it is put in water it ‘disappears’. We say it has dissolved and the resulting liquid is called a solution. E.g. salt in water.
Insoluble – means when it is put in water it stays as a solid. Often is makes the liquid cloudy or sinks to the bottom. E.g. sand in water.
Watch the video below to understand the essentials.
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