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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 made of? |
It is used as a building material.It is also used in the chemical industry and for comcomestics.Cement: made by heating limestone with clay in a klin. Mortar: made by mixing cement and sand with water.Concrete: made by mixing crushed rock or stones (called aggregate), cement and sand with water. |
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What is thermal decomposition ? |
Breaking down of achemical by heating |
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Write the word and symbol equation 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 down the word and symbol equation to showwaht happens when calcium oxide reacts with water.what happens when calcium oxide reacts with water.What can the product be used for? |
CaO+H2O-Ca(OH)2 Calcium oxide+water-calcium hydrooxide calcium hydroxide is used to neutralise acidic soils. |
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What can you use to test for carbon dioxide?What would a posative test be? |
Limestone can be used to test for carbon dioxide. A posative test is if it goes cloudy.
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What happens to limestone statues when exposed to acid rain ? |
The limestone dissloves. |
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Limstone+heat+clay |
=cement |
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Cement +sand |
=motar |
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Cement +sand +aggregate |
=concrete |
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List the advantages of quarrying |
-provides jobs -lead to improved roads -filled in to make fishing -when empty used aslandfill sites |
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List the disadvantages of a limestone quarry |
Destroys habitats Increased emissions Noisy and dusty Busier roads |
