10 minutes maximum! Can you do it in 5?

1. Mixtures of metals are called ...
  • A. ores
  • B. alloys
  • C. salts
  • D. compounds

2. Which diagram represents a solid alloy?

alloys x 4
3. Mild steel is an alloy of iron and carbon. How does the carbon affect the properties of mild steel?
  • A. The carbon makes the alloy softer than pure iron
  • B. The carbon makes the alloy harder than pure iron
  • C. The carbon makes the alloy more malleable than pure iron
  • D. The carbon prevents the alloy from rusting

4. Iron and aluminium have many uses related to their properties.

The metal most suitable to be used for the frame of a racing bicycle would be ...

cyclist graphic
  • A. iron because it is strong
  • B. iron because it rusts
  • C. aluminium because it has a low density
  • D. aluminium because it is ductile
5. Copper is used to make electrical wires but aluminium is preferred for overhead cables. The main reason that aluminium is used for overhead cables rather than copper is because aluminium ...
  • A.   has a low density
  • B.   is malleable
  • C.   is a good conductor of heat
  • D.   does not conduct electricity as well as copper
6. Brass is an alloy of copper and zinc.  Which of the following statements is correct?
  • A.   Brass is formed by a chemical reaction between copper and zinc
  • B.   Brass can be represented by a chemical formula
  • C.   Brass is a better electrical conductor than pure copper
  • D.   Brass is stronger than pure copper

7. Copper is a transition element and is used to make saucepans.

Which of the following properties of copper is NOT correct?

copper pan
Mekonnen Wolday | CC BY-SA 4.0
  • A.   malleable
  • B.   low melting point
  • C.   good conductor of heat
  • D.   insoluble in water

8. The bodies of aircraft are often made from aluminium.

aluminium aircraft image
Which two properties of aluminum make it suitable for this use?
  • A.   good conductor of electricity and good conductor of heat
  • B.   good conductor of electricity and high tensile strength
  • C.   high tensile strength and low density
  • D.   low density and good conductor of heat
9. Stainless steel is an alloy of iron and other metals. It is strong and does not rust but it costs much more than normal steel.
Which of the following would NOT be made from stainless steel?
  • A.   cutlery
  • B.   saucepans
  • C.   kitchen sink
  • D.   railway tracks
10. The use of a metal is related to its properties. Which row below lists a property that is NOT correct for the use given?
  • A.   Mild steel in car bodies because it has a high density
  • B.   Aluminium in food containers because it resists corrosion
  • C.   Copper in electrical wires because it is a good conductor of electricity
  • D.   Stainless steel in chemical reactors because it does not rust