Uses of limestone
- Building and statues (strong and durable rock with a nice colour)
- Can be crushed, mixed with clay and heated to make cement
- Can add sand to cement to make mortar (like cement, hard and strong once set and lasts for a long time)
- If you add aggregate (small pebbles) to mortar you get concrete
- So LOTS of uses as BUILDING MATERIALS
Quarrying
- Limestone is a rock so is found in the ground and has to be quarried
- This involves using explosives and heavy mechanical equipment which creates noise dust and pollution
- It spoils the landscape + habitats
- The land is ruined so much that it can't be used again
- It produces a valuable material (limestone)
- Positive economic impact in the area
- Creates employment in the local area
Limestone cycle
Thermal decomposition (seen above)
HAPPENS TO OTHER CARBONATES (CO3)
We see above that Calcium carbonate, when heated, makes calcium oxide and it also makes carbon dioxide.
Other carbonates do exactly the same thing:
- Copper carbonate, when heated, makes copper oxide and carbon dioxide
- Zinc carbonate, when heated, make zinc oxide and carbon dioxide
- Magnesium carbonate, when heated, makes magnesium oxide and carbon dioxide
- Etc.
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