Limestone

Question 1

What is the limestone cycle?

Answer 1

Calcium carbonate+heat = calcium oxide+carbon dioxide
CaCO(3) l CaO CO(2)
l
v
Calcium oxide + water = calcium hydroxide
CaO H(2)O l Ca(OH)(2)
l
v
Calciumhydroxide+carbondioxide=Calciumcarbonate+water

Question 2

What happens when a carbonate is reacted with acid?

Answer 2

It forms a salt, carbon dioxide and water

Question 3

How do you make cement?

Answer 3

Heat powdered limestone in a kiln with powdered clay

Question 4

How do you make mortar?

Answer 4

Mix sand and water with cement

Question 5

How do you make concrete?

Answer 5

Mix cement with sand and aggregate

Question 6

What are the advantages of limestone quarrying?

Answer 6

Provides jobs, better transport links, neutralises acidic soil and water, puts money into the local economy and creates new habitats

Question 7

What are the disadvantages of limestone quarrying?

Answer 7

Destroys the landscape, lots of noise pollution, dust covers landscape, destroys habitat and more traffic

Question 8

What are the advantages of limestone products?

Answer 8

They are widely available, cheap, hard-wearing, they don’t rot or corrode and they are fire-resistant

Question 9

What are the disadvantages of limestone products?

Answer 9

They are ugly and crack easily