The resulting mixture is called a solution . Water is an excellent solvent. They are said to be soluble in water. Many substances do not dissolve in water. They are said to be insoluble .
Oils are usually insoluble in water.
When a mixture of oil and water is shaken, the result is an emulsion . If an insoluble solid is mixed with water, the result is called a suspension . Pure water does not conduct electricity. Many solutions do conduct electricity. This is because the salt breaks up into ions .