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Metals Extraction

Total questions: 15

Worksheet time: 11mins

Name
Class
Date
1.
What is an ore?
a)
a solid metal
b)
a rock cantaining a metal combined with other elements
c)
an element
d)
an object used to row a boat
2.
What is the removal of oxygen from a substance called?
a)
reduction
b)
extraction
c)
electrolysis
d)
oxidation
3.
Which element cannot be extracted from its ore by reduction with carbon?
a)
iron
b)
aluminium
c)
copper
d)
lead
4.
What is the name of the process that uses electricity to separate the elements in a compound?
a)
reduction
b)
electrolysis
c)
extraction
d)
mining
5.

How would you extract iron from haematite (iron ore)?

a)

reduction with carbon

b)

electrolysis

c)

decomposition

d)

oxidation

6.

How would you extract silver?

a)

Heating with coke

b)

Electrolysis

c)

The blast furnace

d)

Silver is found uncombined

7.
Which reaction is used to keep the furnace hot?
a)
CO2 + C -> 2CO
b)
C + O2 ->  CO2
c)
Fe2O3 + 3C -> 2Fe + 3CO
d)
C + O2 ->  CO2
8.
Which gas is produced as a waste product when iron is extracted from its ore in the blast furnace?
a)
Carbon dioxide
b)
Hydrogen
c)
Nitrogen
d)
Oxygen
9.
Iron is made by burning its ore, hematite. Hematite contains silica. What reacts with this impurity to remove it?
a)
Carbon
b)
Carbon Dioxide
c)
Silicon dioxide
d)
Calcium Oxide
10.
Name of method iron oxide is reduced using carbon on an industrial scale.
a)
Fractional distillation
b)
Cracking
c)
Blast furnace
11.
In the blast furnace, limestone is added to...
a)
Create more heat
b)
Turn iron oxide into pure iron
c)
Remove acidic impurities
12.

Copper is a transition element used to make saucepans.

Which property is not correct for copper?

a)

good conductor of heat

b)

insoluble in water

c)

low melting point

d)

malleable

13.

Which two elements make up mild steel?

a)

aluminium & magnesium

b)

copper & zinc

c)

iron & carbon

d)

tin & lead

14.

Which property do all metals have?

a)

Their boiling points are low.

b)

Their densities are low.

c)

They conduct electricity.

d)

They react with water.

15.

Why is copper used to manufacture electrical wires?

a)

It is used because it is ductile, malleable and is a good conductor of electricity.

b)

It is used because it has lustre.

c)

It is used because it is ductile, brittle and a good conductor of electricity.

d)

It is used because it is magnetic.