Alloys

    Cards (22)

    • What is the definition of an alloy?

      An alloy contains a metal blended with other elements.
    • Why are alloys generally harder than pure metals?

      Alloys have atoms of different sizes that disrupt the layers, preventing them from sliding.
    • What are the properties of alloys compared to pure metals?

      • Alloys tend to be harder than pure metals.
      • Alloys do not slide over each other as easily as pure metals.
    • What are the components of bronze?

      Bronze is an alloy of copper and tin.
    • Why is bronze used for statues?

      Because bronze is extremely hard and tends not to corrode.
    • What are the components of brass?

      Brass is an alloy of copper and zinc.
    • What are the uses of brass?

      Brass is used for musical instruments and door handles.
    • Why is pure gold usually alloyed with other metals?

      Pure gold is too soft, so it is alloyed to make it harder.
    • What metals are commonly used to alloy with gold?

      Gold is alloyed with silver, copper, and zinc.
    • How is the purity of gold rated?
      The purity of gold is rated in carats.
    • What is the carat rating of 100% pure gold?

      24 karat is 100% pure gold.
    • What is the carat rating of 75% gold?

      18 karat is 75% gold.
    • What is steel?

      Steel is an alloy of iron containing specific amounts of carbon.
    • What is the difference between high carbon steel and low carbon steel?

      High carbon steel is extremely hard but brittle, while low carbon steel is softer and more easily shaped.
    • What is high carbon steel used for?

      High carbon steel is used to make cutting tools such as chisels.
    • What is low carbon steel used for?

      Low carbon steel is used to make car bodies.
    • What is the problem with steel, and how is it addressed?

      Steel can rust, so stainless steel contains chromium and nickel to prevent corrosion.
    • What is stainless steel?

      Stainless steel is hard and resistant to corrosion, containing chromium and nickel.
    • What are aluminium alloys known for?

      Aluminium alloys are known for their low density.
    • Why are aluminium alloys useful in aeroplane bodies?

      Because aluminium alloys are low density, making them lightweight.
    • What are the uses of different forms of steel?
      • High carbon steel: used for cutting tools (e.g., chisels)
      • Low carbon steel: used for car bodies
      • Stainless steel: used for items requiring corrosion resistance
    • What are the main alloys discussed in the material?

      • Bronze: copper and tin
      • Brass: copper and zinc
      • Gold alloys: gold with silver, copper, and zinc
      • Steel: iron and carbon
      • Stainless steel: iron, carbon, chromium, and nickel
      • Aluminium alloys: aluminium with other elements
    See similar decks