Metallic bonding

    Cards (18)

    • What type of bonding occurs between metal atoms?

      Metallic bonding
    • What characteristic properties arise from metallic bonding?
      Strength, high melting and boiling points
    • What happens to outer shell electrons in metallic bonding?
      They are shared among all atoms
    • What are delocalized electrons?

      Electrons that can move freely in metals
    • What holds the metallic structure together?

      Electrostatic attraction between positive ions and negative electrons
    • Why do metals have high melting and boiling points?
      Due to strong metallic bonds
    • Why are metals good conductors of electricity and heat?
      Delocalized electrons can carry an electrical charge and thermal energy
    • What does malleable mean in relation to metals?
      Can be bent or hammered into shapes
    • Why can layers of metal atoms slide over one another?

      Due to their regular structure
    • What is an alloy?
      A mixture of two or more elements
    • How are alloys made?
      By mixing different metals or a metal and non-metal
    • Why do different sized atoms in alloys make them harder?
      They disrupt the regular structure so layers can no longer slide over eachother
    • What is steel primarily made of?
      Iron
    • Why is steel used in cars and planes?
      It provides necessary strength
    • What are the properties of metals due to metallic bonding?
      • High melting and boiling points
      • Good conductors of electricity and heat
      • Malleable and ductile
      • Strong due to electrostatic attraction
    • How do alloys differ from pure metals?
      • Alloys contain two or more elements
      • Different sized atoms disrupt regular structure
      • Alloys are generally harder than pure metals
    • What does the electrostatic attraction hold?

      Everything together in a regular structure
    • Why is steel harder than a pure metal?
      -Steel is an alloy meaning it contains 2 or more different elements
      -this means that elements have differently sized atoms
      -this disrupts the regular structure
      -layers cannot slide over each other