Nitinol is a 'smart' alloy. Why can it be described as a 'smart' alloy?
  • It expands when it is heated
  • It is flexible
  • It is made by mixing two metals
  • It returns to its original shape when heated
Which type of steel is likely to be used for flatware?
  • High carbon steel
  • Low carbon steel
  • Stainless steel
  • Pure iron
Brass is an alloy made from...
  • copper and tin
  • copper and bronze
  • copper and zinc
  • copper and iron
Iron is mixed with other elements including carbon, chrominium and nickel to make steel. The percentage of the elements added determine the type of steel and also the properties of the steel produced. Which type of steel is likely to be used to make cutting tools?
  • High carbon steel
  • Low carbon steel
  • Stainless steel
  • Pure iron
Nitinol is an alloy made from...
  • copper and titanium
  • nickel and copper
  • neon and titanium
  • nickel and titanium
Bronze and cupronickel are both used to make coins. They are both examples of...
  • compounds
  • alloys
  • elements
  • ores
Metals are often mixed with other elements to make alloys. Which of the following is NOT a good reason for producing an alloy?
  • It can produce harder materials
  • It can produce different colored materials
  • It can produce more malleable materials
  • It can produce more brittle materials
Some alloys have very special properties. They return to their original shape after becoming deformed. These alloys are called...
  • shape memory alloys
  • shape remembering alloys
  • bend memory alloys
  • bendy alloys
Gold that is used to make jewelry is usually an alloy. It is mixed with copper and silver. Apart from making it harder, what other property is changed by mixing it with other metals?
  • Increases its density
  • Lowers its melting point
  • Colour
  • Decreases its hardness
Bronze is an alloy made from...
  • copper and tin
  • copper and brass
  • copper and zinc
  • copper and iron
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