Limestone And Metals

Question 1

What is limestone?

Answer 1

Calcium carbonate

Question 2

What happens to limestone when heated?

Answer 2

Makes carbon dioxide and calcium oxide

Question 3

What happens when limestone reacts with acid?

Answer 3

Makes calcium salt, co2 and water

Question 4

What happens when you add calcium oxide to water?

Answer 4

Calcium hydroxide

Question 5

What can be used to neutralise acidic soil?

Answer 5

Limestone and calcium oxide

Question 6

How do you make cement?

Answer 6

Limestone and water

Question 7

How do you make mortar?

Answer 7

Cement sand and water

Question 8

How do you make concrete?

Answer 8

Aggregate, cement and sand

Question 9

What are a bad points about quarrying limestone?

Answer 9

Ugly holes, explosives make noise and dust, destroys habitats

Question 10

What can limestone make?

Answer 10

Houses roads, dyes

Question 11

What are good things about using limestone?

Answer 11

Widely available, cheap they don’t rot and can’t be eaten by insect.

Question 12

What is a metal ore?

Answer 12

A rock which contains enough metal to make it worth extracting

Question 13

How are metals extracted from ores?

Answer 13

By a chemical reaction

Question 14

How can electrolysis be used?

Answer 14

To purify the metal

Question 15

How can a metal ore be extracted from its ore?

Answer 15

Chemically by reduction, oxygen is removed

Question 16

What happens when the metal needing to be extracted is more reactive than carbon?

Answer 16

Electrolysis

Question 17

What happens when the metal needing to be extracted is less reactive than carbon?

Answer 17

It can be extracted by reduction using carbon

Question 18

What is an alloy?

Answer 18

A mixture of two metals

Question 19

Why is iron turned into an alloy of steel?

Answer 19

Because it is too bendy on its own

Question 20

What is high carbon steel?

Answer 20

Hard and can make blades for cutting tools

Question 21

What is low carbon steel?

Answer 21

Easily shaped and used for car bodies

Question 22

Why are alloys harder?

Answer 22

Because smaller atoms slot into sections between the big atoms which make it harder for them to slide over each other.

Question 23

What makes bronze?

Answer 23

Copper and tin

Question 24

What are some properties of a metal?

Answer 24

Maliable

Conductors of heat and electricity

Question 25

What are the properties of copper?

Answer 25

Conductor of electricity
Hard and strong
Doesn’t react with water

Question 26

What are properties of alliminium?

Answer 26

Corrosion resistant
Low density
Forms strong alloys

Question 27

What are properties of titanium?

Answer 27

Low density
Strong
Corrosion resistant

Question 28

How is alliminium extracted

Answer 28

Electrolysis

Question 29

The anode is?

Answer 29

Positive

Question 30

The cathode is?

Answer 30

Negative

Question 31

What is electrolysis?

Answer 31

When a solution is split with electricity

Question 32

What is bio leaching?

Answer 32

Bacteria splits copper from copper sulfate. Bacteria gets energy from the bond and seperates copper

Question 33

What is phytomining?

Answer 33

Growing plants in soil where there is lots of carbon. Copper builds up in the leaves the plant is then burned and copper is collected from the ash.

Question 34

Why is mining good?

Answer 34

Produces jobs and brings money to the area.

Question 35

Why is mining bad?

Answer 35

Creates noise and pollution