Chemistry - Limestone

Limeston Revision

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  • Created by: Alice
  • Created on: 12-05-11 17:40

What is limestone mainly made from?

What happens when limestone is heated?

Name 3 examples of what limestone is used for:

What is thermal decomposition 

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Calcium carbonate.

It breaks down to form calcium oxide and carbon dioxide.

Cement, concrete and glass

Thermal decomposition is a type of chemical reaction. In thermal decomposition, a substance breaks up into at least two different parts when it is heated.

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How do you make quicklime?

How do you make slaked lime?

What are limestone, quicklime and slaked lime all used for?

How is glass made?

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By heating the limestone so that it breaks down to calcium oxide and carbon dioxide. Calcium oxide is quicklime.

You add water to the calcium oxide (quicklime) and this forms calcium hydroxide (slaked lime)

They are all used to neutralise excess acidity 

Glass is made by melting sand and then cooling it

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What are the two main advantages of a limestone quarry?

What are the two main disadvantages of a limestone quarry?

What is bad about limestone?

What is good about concrete?

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1: Limestone is a natural valuable resource and used to make things such as cement and concrete. 2: It provides many jobs that can support the local economy.

1: It damages the environment. 2: It can create noise pollution and cause traffic in the local area. 

Things like cement react with the carbon dioxide dissolved in rainwater, and wears away. This could damage things like buildings. 

It is easily formed into different shapes before it sets hard.

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