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Water - Solubility - Ions

Water - General.

Water is essential for all life - nothing can live without water.

There is more water on the surface of the Earth than any other substance.
W
ater moves between the surface of the Earth and the atmosphere
(see the Water Cycle).

Water has many uses.
It is treated on a large scale to make it safe to drink.
Water is used both as a solvent and as a coolant.

Water is an important raw material for many industrial processes
including the manufacture of ammonia and sulphuric acid.

Many substances dissolve in water. Some of these make water hard.
Some substances react with water to produce acidic or alkaline solutions.

The sea contains a very large number of dissolved substances.

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