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14 Cards in this Set
- Front
- Back
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What is limestone made from? |
Calcium carbonate |
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How do you get limestone out of the ground? |
quarrying |
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What is limestone used for? |
It is used as a building material. It is also used in the chemical industry and for cosmetics. Cement: Made by heating limestone with c;lay in a kiln. Mortar: made by mixing cement and sand with water. Concrete: Made by mixing crushed rocks or stones (Called aggregate), cement and sand with water. |
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What is thermal decomposition? |
Breaking down of a chemical by heating. |
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Write the word and symbol equations for the thermal decomposition of calcium carbonate? |
CaCO3=====CaO+CO2 calcium carbonate =calcium oxide+carbon dioxide |
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What happens to magnesium carbonate, copper carbonate, zinc carbonate when they are heated? |
They undergo thermal decomposition |
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Write word and symbol equations to show what happens when calcium oxide reacts with water. What can the product be used for? |
CaO + H2O makes Ca(OH)2 Calcium oxide + Water makes Calcium Hydroxide Calcium hydroxide is used to neutralise acidic soils |
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What can you use to test for carbon dioxide? What would a positive test be? |
Limewater It would turn cloudy |
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What happens to limestone statues when exposed to acid rain? |
The limestone dissolves |
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Limestone+heat+clay |
cement |
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cement+sand |
mortar |
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cement+sand +aggregate |
concrete |
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List the advantages of a limestone quarry |
Provide jobs lead to improved roads filled in to make fishing When empty used in landfill sites |
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List the disadvantages of a limestone quarry |
Destroys habitats increased emissions noisy and dusty busier roads |
