Metallic Bonding

    Cards (26)

    • What type of bonding occurs when a metal atom reacts with a non-metal atom?
      Ionic bonding
    • What is the bonding between two non-metal atoms called?
      Covalent
    • What kind of structure do metals consist of?
      Giant structure
    • How are atoms arranged in metals?
      In regular layers
    • What are the outer electrons in a metal described as?
      Delocalised
    • In which energy level of atoms are the delocalized electrons found?
      Outer energy level
    • Are the outer electrons in metals strongly attached to any individual atom?
      No, they are not
    • What term is used to describe the delocalized electrons in metals?
      Sea of electrons
    • What is the movement of outer electrons like in metals?
      Free to move through the structure
    • After a metal atom loses its outer electrons, how is it referred to?
      Positive metal ions
    • What type of attraction exists between the positive metal ions and the sea of delocalised negative electrons?
      Strong electrostatic attraction
    • What is electrostatic attraction?
      Attraction between positive and negative objects
    • What is the electrostatic attraction in metals called?
      Metallic bond
    • Why do metals have high melting and boiling points?
      Metallic bonds are strong
    • Why do strong metallic bonds result in high melting and boiling points?
      It requires a lot of energy to break them
    • How do moving electrons contribute to the thermal conductivity of metals?
      They can carry thermal energy
    • Why can metals be bent and shaped?
      Layers of atoms can slide
    • What problem exists with some pure metals regarding their hardness?
      Not hard enough to be useful
    • How are metals hardened?
      By making an alloy
    • What is an alloy?
      A mixture of metals
    • How does the different size of atoms in an alloy affect its hardness?
      It distorts the layers making it harder
    • How do alloys compare to pure metals in terms of hardness?
      Alloys are harder
    • What is the name for the attraction between positive metal ions and delocalized electrons?
      Metallic bonding
    • What property of metals is a direct result of the moving electrons carrying thermal energy?
      Thermal conductivity
    • What does the ability of layers of atoms to slide over each other allow metals to do?
      Be bent and shaped
    • How does distorting the layers in alloys prevent the layers from sliding over each other?
      The irregular atoms block movement