1.2 Limestone

Question 0

Is calcium carbonate a compound or mixture?

Answer 0

It is a compound

Question 1

What is the chemical formula for calcium carbonate?

Answer 1

CaCO3

Question 2

What does calcium carbonate break down into through thermal decomposition?

Answer 2

Calcium oxide and carbon dioxide

Question 3

What is used to make cement?

Answer 3

Clay and powder limestone

Question 4

What is used to make mortar?

Answer 4

Cement, sand and water

Question 5

What happens to lime water when carbon dioxide is present?

Answer 5

It turns cloudy

Question 6

Calcium oxide reacts with water to produce what?

Answer 6

Calcium hydroxide

Question 7

Calcium carbonate breaks down when heated what is this called called?

Answer 7

Thermal decomposition

Question 8

What colour is calcium oxide when hot?

Answer 8

Yellow

Question 9

What colour is calcium oxide when cold?

Answer 9

White

Question 10

How do you produce calcium oxide from calcium carbonate?

Answer 10

Heating it

Question 11

What is the formula for calcium oxide plus water.

Answer 11

CaO+H2O->Ca(OH)2

Question 12

What is a benefit of a lime stone quarry?

Answer 12

Local employment

Question 13

Limestone is mostly made of what?

Answer 13

Calcium carbonate

Question 14

An advantage of using concrete for building foundations.

Answer 14

It is strong when squashed.

Question 15

Limestone is mostly made of what?

Answer 15

Calcium Carbonate

Question 16

What is mixed with Limestone and Sodium carbonate to create glass?

Answer 16

Sand

Question 17

What type of rock is Limestone?

Answer 17

Sedimentary

Question 18

How does limewater convert into limestone?

Answer 18

Carbon dioxide is bubbled through it

Question 19

What compound dissolves in water to form lime water?

Answer 19

Calcium hydroxide

Question 20

Cement is powdered limestone and what?

Answer 20

Sand and water

Question 21

If carbon dioxide is present, what does the lime water do?

Answer 21

Goes cloudy ☁️☁️☁️

Question 22

What does limestone under go when heated?

Answer 22

Thermal Decomposition

Question 23

When limestone reacts with an acid what is produced?

Answer 23

Water, Carbon Dioxide & a salt

Question 24

What gas is added to limewater to make limestone?

Answer 24

Carbon Dioxide

Question 25

What is the chemical symbol for lime water?

Answer 25

Ca(OH) (Aq) | 2

Question 26

What is an economic impact of quarrying for Limestone?

Answer 26

New jobs and more money

Question 27

Andy says "Acid rain doesn't damage limestone". Is andy correct or wrong

Answer 27

Andy is wrong

Question 28

Cement is used to make concrete, but what else is?

Answer 28

sand, water & powdered rock aggregate

Question 29

When Limestone is heated you get a new substance and a gas, write out the chemical symbols for both of these.

Answer 29

CaO + CO | 2

Question 30

What is produced by putting limestone under thermal decomposition

Answer 30

Calcium oxide and carbon dioxide

Question 31

If limewater turn cloudy what is present?

Answer 31

Carbon dioxide

Question 32

What is needed in order to created cement?

Answer 32

Clay and limestone which is powdered

Question 33

Carbonates react with icid to produce what?

Answer 33

Carbon dioxide