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What it is
Limestone is basically formed from all the
marine fossils that used to be under the sea
many years ago.
It is a natural form of the compound Calcium
Carbonate. It is a grey, pale and rough rock
that is easy to shape. It is mined from the
ground.
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Uses for Limestone
In the raw form, Limestone can be used for
Buildings, Roads and Statues.
After a reaction, it can be used for Paving,
Cement, Glass, Concrete and Mortar.
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Quarrying
As Limestone is mined from the ground, a Quarry is needed to retrieve the useful
rock. This has its advantages and disadvantages, as explained below:
Advantages Disadvantages
Creates unskilled jobs in the local area Noise Pollution (explosions, large
trucks)
After the quarry is finished with, it can Destroys landscapes
be turned into a nature reserve (E.G
Eden Project, Cornwall)
Money for the economy Air pollution (dust)
Provides Limestone (obviously) Destroys habitats (animals homes)
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Chemical Names and Formulas:
Limestone
Chemical Name: Calcium Carbonate
Chemical Formula: CaC03 No. Of Atoms: 5
Quicklime
Chemical Name: Calcium Oxide
Chemical Formula: CaO No. Of Atoms: 3
Slaked Lime
Chemical Name: Calcium Hydroxide
Chemical Formula: Ca(OH)2 No. Of Atoms: 5
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Reactions of Limestone 1
Limestone to Quicklime
Calcium Carbonate --------> Calcium Oxide + Carbon Dioxide
(Limestone) heat (Quicklime) j
CaCO3 --------> CaO + CO2
Quicklime to Slaked Lime
Calcium Oxide + Water --------> Calcium Hydroxide
(Quicklime) (H20) Ca(0H)2 j
CaO + H20 + H20 --------> Ca(OH)2
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