alloys and metals

• What type of bonding occurs between metal atoms?

  Metallic bonding
• What characteristic properties arise from metallic bonding?

  Strength, high melting and boiling points
• How do metals bond to non-metals?

  Through ionic bonding
• How do non-metals bond to other non-metals?

  Through covalent bonding
• 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 structure of metals together?

  Electrostatic attraction between ions and electrons
• Why do metals have high melting and boiling points?

  Due to strong metallic bonding
• Why are metals good conductors of electricity and heat?

  Delocalized electrons carry 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 the regular structure of metals
• What is an alloy?

  A mixture of two or more different 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 of metals
• What is steel primarily made of?

  Iron
• What elements can be found in steel?

  Carbon, chromium, manganese, vanadium
• Why is steel used in cars and planes?

  It has the strength needed for construction
• 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