Metal Hydroxide Tests (Precipitates)

• How do you prepare a sample?

  1.Have solution of mystery compound

  2.Add a few drops of sodium hydroxide

  3.You get a coloured insolube hydroxide
• Calcium Ions


  White Precipitate
• Copper 2 Ion

  Blue Precipitate
• Iron 2 Ion


  Green precipitate
• Iron 3 Ion


  Brown Precipitate
• Aluminium Ion


  White, colourless
• Magnesium Ion


  White precipitate