Question 1
Cupronickel is used to make coins.
The arrangement of atoms in cupronickel is shown.
Which kind of substance is cupronickel?
A
an alloy
B
an isotope
C
a compound
D
a transition element
Question 2
Which statement about alloys is correct?
A
Alloys are pure metal elements.
B
At least two or more metals react together to make alloys.
C
Alloys can be harder and stronger than a pure metal.
D
Steel is not an alloy because it can contain the non-metal carbon.
Question 3
Which statement about metals and their uses is correct?
A
Aluminium is used in the manufacture of aircraft because it has a high density.
B
Copper is used to make cooking utensils because it is a poor conductor of heat.
C
Mild steel is used to make car bodies because it is brittle and breaks easily.
D
Stainless steel is used to make cutlery because it is resistant to corrosion.
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