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Question

Why are coils of electric toasters and electric irons made of an alloy rather than a pure metal?


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Solution

Alloys

  • Alloys are referred to as a blend of metals or metals combined with other elements.
  • Properties of metals can be enhanced by the addition of certain metals or elements.
  • Example: Zinc amalgam is an alloy of zinc 90% and mercury 10%.

Coils of electric toasters and electric irons made of an alloy

  • Alloys are used to make coils of electric toasters and electric irons made of an alloy instead of pure metal.
  • Alloys have high resistance, allowing them to conduct less energy.
  • Alloys do not easily melt at high temperatures.
  • Alloys are more durable than pure metals.
  • The tensile strength of alloys is greater than that of its constituents.
  • Pure metal's color may be changed by combining it with another metal or nonmetal and making an alloy.
  • Alloys are more corrosion-resistant than pure metals.

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