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The water cycle

This is where the heat from the sun causes the evaporation of water from the salt solution (the sea) and the
water vapour is then carried upwards because warm air rises and as the air rises it cools due to general
cooling of the lower part…

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This is Calcium Carbonate (lime scale).

How did the ions come in contact with the water to form hard water?

Water has passed over (contact) over rocks that contained Calcium/Magnesium ions. Water has reacted
with the rocks and minerals dissolve in the water to form the hard water.



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