C1 Rocks and building materials

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  • Created by: KAustria
  • Created on: 08-06-14 14:27
What is lime stone used for?
Building - cement and calcium oxide.
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How is concrete made?
Mixing cement with sand, aggregate and water
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What compound is mainly found in Limestone?
Calcium Carbonate CaCO3
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What does calcium carbonate decompose to?
Calcium oxide and carbon dioxide
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What is the the type of reaction called when limestone is broken down?
Thermal Decomposition
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How is calcium carbonate broken down?
IT is down on a large scale using a lime kiln
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What do metal carbonated decompose to?
The metal oxide and carbon dioxide when heated strongly enough.
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What are the products when zinc carbonate is heated strongly?
Zinc oxide and carbon dioxide.
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What do carbonated produce when they react with acid?
Salt, water and carbon dioxide gas.
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What is lime water?
Carbon hydroxide solution.
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What happens when lime water reacts with carbon dioxide?
It turns cloudy because it reacts with carbon dioxide to form insoluble calcium carbonate.
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Describe the 'limestone reaction cycle'
1. Calcium carbonate is heated to give off CO2 and CaO 2. CaO + H2O -> Ca(OH)2 3. Add more water to make calcium hydroxide solution 4. Add CO2 to solution to make calcium carbonate
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How is Cement made?
Limestone is mixed with clay and is heated very strongly in a kiln. The product is ground up to make a fine powder.
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How is mortar made and what is its used?
Cement is mixed with sand and water. Mortar is used to hold bricks and blocks in buildings.
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What is aggregate?
Crush rock
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What is a negative impact of quarrying limetsone?
Destroys environment and effects peple locally in a negative way.
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What is the problem with cement works?
The heating o limestone and clay requires large amount of energy. The works also need a lot of space.
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Other cards in this set

Card 2

Front

How is concrete made?

Back

Mixing cement with sand, aggregate and water

Card 3

Front

What compound is mainly found in Limestone?

Back

Preview of the front of card 3

Card 4

Front

What does calcium carbonate decompose to?

Back

Preview of the front of card 4

Card 5

Front

What is the the type of reaction called when limestone is broken down?

Back

Preview of the front of card 5
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