Chemistry metal precipitates

• Calcium (Ca 2+)

  White
• Copper (Cu 2+)

  Blue
• Iron II (Fe 2+)

  Green
• Iron III (Fe 3+)

  Brown
• Aluminium (Al 3+)


  White at first

  redissolves in excess sodium hydroxide to form a colourless solution
• Magnesium (Mg 2+)

  White