Limestone

Question 0

What is thermal decomposition?

Answer 0

Thermal decomposition is when one substance is heated and chemically changes into at least two new substances.

Question 1

What is limestone mainly made of?

Answer 1

Calcium carbonate

Question 2

Calcium hydroxide is an alkali which can be used to do what?

Answer 2

Neutralise acidic soil in fields.

Question 3

What is the test for carbon dioxide?

Answer 3

If you make a solution of carbon hydroxide in water (limewater) and bubble gas through it, the solution will turn cloudy if there is carbon dioxide gas in it.

Question 4

How do you make cement?

Answer 4

Powdered limestone is heated in a kiln with powdered clay to make cement

Question 5

How do you make mortar?

Answer 5

Cement can be mixed with sand and water to make mortar.( mortar is used to stick bricks together)

Question 6

How do you make concrete?

Answer 6

Mix cement with sand and aggregate(water and gravel) to make concrete

Question 7

What are some of the uses of limestone?

Answer 7

Building material
Cement
Mortar
Concrete

Question 8

Name three disadvantages of quarrying limestone

Answer 8

Ruins habitats
Lorries need to transport the limestone so causes noise and pollution
Creates dust, worsens people’s asthma

Question 9

Name some advantages of quarrying limestone

Answer 9

Creates jobs 
Cheaper than marble or granite 
Limestone doesn't rot when it gets wet
Fire resistant 
Brings more money into the local economy
Neutralises acidic soil 
Once quarrying is completed, restoration of the area is normally required turning it back into a habitat for wildlife