4.1

• Metals are good conductors of 


  electricity
• Metals are good conductors of what...

  heat
• Metals typically have high..

  densities
• Metals have relatively high


  melting points and boiling points
• Why is mercury an exception

  Mercury is a liquid at room temperature , because it has an unusually low melting point
• The group 1 elements (alkali metals) have some properties like


  They are all soft enough to be cut with a knife and they react vigorously with water to produce hydrogen gas.
• malleable means 


  can be shaped by beating or rolling
• ductile meaning

  can be drawn into a wire
• lustrous meaning


  reflective when freshly cut or polished
• low ionisation energies and electronegativities means

  that they readily lose electrons