metals

• Properties of metals

  1.      hard except group1 as atoms are packed closely to one another

  2.      malleable and ductile as layers of atoms can slide past one another

  3.      high melting and boiling point except group1

  4.      conducts heat and electricity

  5.      high density except for group1
•  Properties of pure metals

  1.      soft

  2.      fixed boiling and melting point
• Properties of alloy

  1.      mixture of a metal with one or few other elements

  2.      hardmelts over a range of temperatures
• ways to prevent rusting

  coating with paint, grease or plastic

  sacrificial protecting
• what are the two methods for sacrificial protecting?

  galvanizing, coating metal with zinc

  attaching a more reactive metal such as magnesium or oxide