WorksheetsALLOY
Total questions: 9
Worksheet time: 5mins
‘Bronze is harder than copper’. Which of the following is the best to explain the statement?
Atoms in bronze are arranged closely packed and less empty spaces.
Layers of atoms in bronze are not easily slide over each other.
Atomic size of copper and tin is different.
Bronze is a mixture of copper and tin
What is the composition of brass?
30% tin and 70% copper
10% tin and 90% copper
30% zinc and 70% copper
10% zinc and 90% copper
Which of the following statements below is true?
Copper is more ductile than brass
Brass is more malleable than copper
Iron is shinier than stainless steel
Iron is more resistant to corrosion than steel
An industrial product is made by adding chromium and carbon to iron. The product produced is
I. more malleable than iron
II. more resistant to corrosion than iron
III. is shinier than iron
IV. is harder than iron
II and IV
I, II and III
II, III and IV
I, II, II and IV
Which of the following mixture forms a light and strong alloy to make the body of a speeding boat?
iron and carbon
Aluminium and copper
Copper and nickel
Tin and lead
Alloying can harden the metals because
the foreign atoms can prevent layers of atoms from sliding over each other
the foreign atoms produce stronger attractive forces between the metal atoms
the foreign atoms are stronger and harder
the foreign atoms increase the energy of the metal atoms
Which of the following characteristics belong to pure metals?
I. Ductile
II. Malleable
III. Brittle
IV. Good conductor of electricity
I and II
I and IV
I, II and IV
I, II, III and IV
Which of the following properties does not belong to an alloy as compared to its pure metal?
Stronger
More corrosion resistant
Harder
More malleable
Diagram above shows the arrangement of atoms in brass. Which of the following could be atoms X and Y?
X : Copper Y: Tin
X: Zinc Y: Copper
X: Iron Y: Carbon
X: Copper Y: Zinc
