Rocks And Building Materials

Question 0

What can limestone be used for?

Answer 0

For building. It used to make calcium oxide and cement

Question 1

Why do we quarry large amounts of limestone

Answer 1

Because it has many uses

Question 2

How do make concrete?

Answer 2

By mixing cement with sand, aggregate and water

Question 3

What is limestone mainly made of?

Answer 3

Calcium carbonate CaCO3

Question 4

What happens when calcium carbonate is heated strongly?

Answer 4

It decomposes to make calcium oxide and carbon dioxide

Question 5

What’s the name of the reaction wen calcium carbonate is strongly heated?

Answer 5

Thermal decomposition

Question 6

What is thermal decomposition

Answer 6

It’s breaking down by heating

Question 7

What happens when metal carbonates react in a similar way when heated strongly?

Answer 7

It decomposes to metal oxide and carbon dioxide

Question 8

What is a Bunsen burner not able to do to sodium carbonate and potassium carbonate

Answer 8

Can’t get hot enough to decompose them

Question 9

What do all carbonates react with? What Is produced?

Answer 9

With acids to produce salt water and carbon dioxide

Question 10

Why is limestone damaged by acid rain?

Answer 10

Evaluate the calcium carbonate in the limestone reacts with the acid in her rain

Question 11

What is calcium hydrogen solution?

Answer 11

Limewater

Question 12

What is lime water used to test?

Answer 12

For carbon dioxide

Question 13

Why does limewater turn cloudy when cabin dioxide is apparent?

Answer 13

Because the limewater reacts with the carbon dioxide to produce unsolvable calcium carbonate

Question 14

What happens when water is added to calcium oxide

Answer 14

They react to produce calcium hydroxide

Question 15

What is calcium hydroxide, and acid or alkali? What does this mean?

Answer 15

An alkali so it can be used to neutralise acids

Question 16

How is calcium hydroxide acid used to neutralise acids by farmers and in industries

Answer 16

Used to neutralise acidic soils by farmers and acidic acids in industries

Question 17

Calcium hydroxide is not very soluble in water but dissolves slightly to make what

Answer 17

Limewater

Question 18

What the first step of the lim stolen reaction cycle

Answer 18

Calcium carbonate is heated. Carbon dioxide is give off and calcium oxide is made

Question 19

What the second step of the limestone cycle

Answer 19

Water is added to calcium oxide to make calcium hydroxide

Question 20

Step 3 of the limestone reaction cycle

Answer 20

More water is added to calcium hydroxide and it’s filtered to make limewater/calcium hydroxide solution

Question 21

Step 4 of the line water reaction cycle

Answer 21

Carbon dioxide is added to calcium hydroxide solution to make calcium carbonate

Question 22

How is limestone used to make cement?

Answer 22

Limestone is mixed with clay and rated strongly on a kiln. The product is ground up to make fine powder

Question 23

Cement is nice with what to make mortar

Answer 23

Sand and water

Question 24

What aggregate make out of?

Answer 24

Small stones or crushed rock

Question 25

Negative issues about times tone quarries

Answer 25

Dust and noise, more traffic, loss of habitats for wildlife

Question 26

Positive issues for limestone quarrying

Answer 26

More employment, more customers and trade for local business & improved roads