WorksheetsMetal Oxides
Total questions: 10
Worksheet time: 8mins
Name
Class
Date
1.
How are metal oxides formed?
a)
When metals react with oxide.
b)
When metals react with water.
c)
When metals react with air.
d)
When metals react with oxygen.
2.
Which of the following is the product of the reaction of aluminium and oxygen?
a)
aluminium oxide.
b)
metal oxide
c)
aluminium ore
d)
aluminium and oxygen
3.
Aluminium ore is also known as
a)
haematite
b)
bauxite
c)
ore
d)
rock
4.
Which of the following reactions produces calcium oxide?
a)
calcium and oxide
b)
calcium and water
c)
calcium and air
d)
calcium and oxygen
5.
Which of the following defines oxidation?
a)
A chemical reaction where a substance gains oxygen.
b)
A chemical reaction where a substance loses oxygen.
c)
A chemical reaction where a substance loses a metal.
d)
A chemical reaction where a substance gains a metal.
6.
Which of the following is an example of an oxidation reaction?
a)
Ca + O2 --> CaO
b)
Na2O + H2O --> NaOH
c)
Fe2O3 + CO --> Fe + CO2
d)
All of the choices are oxidation reactions.
7.
Which of the following is an example of an reduction reaction?
a)
Ca + O2 --> CaO
b)
Na + O2 --> Na2O
c)
Fe2O3 + CO --> Fe + CO2
d)
All of the choices are reduction reactions.
8.
The rusting of iron is an example of
a)
a reduction reaction.
b)
an oxidation reaction.
c)
a reaction of iron with water.
d)
a reaction that dissolves iron.
9.
When metals are extracted from ores, a __________ reaction is used.
a)
oxidation.
b)
reduction.
c)
extraction
d)
mining
10.
The process of extracting ores from the ground is called
a)
extraction.
b)
mining.
c)
reduction.
d)
oxidation.
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