Chemistry C1 2.1 Limestone and its uses.

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What is limestone mainly made of?
Calcium carbonate.
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What is limestone used for?
As a building material and to make calcium oxide and cement.
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What makes concrete?
Cement mixed with sand, aggregate and water.
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What does calcium carbonate decompose when heated to make?
Calcium oxide and carbon dioxide.
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Why do we quarry large amounts of limestone rock?
Because it has many uses.
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Wat can blocks of limestone be used for?
Building.
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What is used to make calcium oxide and cement?
Limestone.
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What does mixing cement with sand, aggregate and water make?
Concrete.
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What is mainly calcium carbonate, CaCO_(3)?
Limestone.
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What happens to calcium carbonate when it is heated strongly?
It decomposes to make calcium oxide and carbon dioxide.
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How is calcium carbonate heated to make calcium oxide and carbon dioxide on a large sale?
In lime kilns.
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What is the equation for the reaction when calcium carbonate is strongly heated?
Symbol equation = CaCO_(3) (arrow symbol) CaO+CO_(2) word equation = calcium carbonate (arrow symbol) calcium oxide + carbon dioxide.
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How are limestone and products made from limestone used in the building industry?
As building blocks, to make calcium oxide and to make cement.
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What is the term used for 'breaking down by heat'?
Thermal decomposition.
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What is thermal decomposition?
Breaking down by heating.
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Other cards in this set

Card 2

Front

What is limestone used for?

Back

As a building material and to make calcium oxide and cement.

Card 3

Front

What makes concrete?

Back

Preview of the front of card 3

Card 4

Front

What does calcium carbonate decompose when heated to make?

Back

Preview of the front of card 4

Card 5

Front

Why do we quarry large amounts of limestone rock?

Back

Preview of the front of card 5
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