Core 1 - Limestone

Question 1

What is limestone used for

Answer 1

• Building blocks that make cathedrals houses and statues
• chemicals used in making paint, dyes and medicines come from limestone
• neutralises acidic soil + acidity in lakes from acid rain

Question 2

Limestone is mainly calcium carbonate

Answer 2

CaCO3

Question 3

When limestone is heated it thermally decomposes into…

Answer 3

Calcium oxide and carbon dioxide

Question 4

What decomposes in the same way when it is heated

Answer 4

The carbonates of Magnesium, copper, zinc, calcium and sodium

Question 5

Not all carbonates of metals in which group decompose from the temperature of a Bunsen burner

Answer 5

Group 1

Question 6

Calcium oxide reacts with what and to produce what?

Answer 6

With water to produce calcium hydroxide

Question 7

Calcium hydroxide is a….

Answer 7

Alkali which can be used in the neutralisation of acids

Question 8

Cement

Answer 8

Limestone heated with clay

Question 9

Mortar

Answer 9

Cement mixed with sand + water

Question 10

Concrete

Answer 10

Mix cement with sand + aggregate

Question 11

Cons of quarrying limestone

Answer 11

• permanently scars the landscape
• produces a lot of noise and dust
• destroys animals habitats
• transportation of limestone produces more pollution

Question 12

Cons of making limestone

Answer 12

• cement factories produces a lot of dust which can cause breathing problems
• energy is needed to produce cement therefore burning fossil fuels to make this energy

Question 13

Pros of quarrying limestone

Answer 13

• provides jobs for people which brings more money into the local economy

Question 14

Advantages of limestone

Answer 14

• more available and cheaper than granite or marble

* more hard-wearing than marble