Properties of Metals and Alloys

• Metals have giant structures of atoms with strong metallic bonding. This means that most metals have high melting and boiling points.
• Why are alloys harder than pure metals?

  Disordered atomic structure, making it harder for layers of atoms to slide over each other.
• Metals are good conductors of electricity because the delocalised electrons in the metal carry electrical charge through the metal.
• Metals are good conductors of thermal energy because energy is transferred by the delocalised electrons.