Chemistry crystallization

• Step 4

  • Collect and dry the crystals with a filter paper
  • Crystals can be activated by heating them gently
• Crystallize


  To cause a substance to form a crystal from a solution
• Filter

  To separate a solid from a liquid by using a filter paper
• Step 1

  • Measure the required volume of the solution with a measuring cylinder
  • Weigh the solid in a clean, dry flask
  • Add a precipitant to initiate the reaction
• Step 3

  • Filter the mixture to remove the excess precipitant
  • Only a solution and crystalline solid should be left
• Steps in the crystallization process

  • Measure the required volume of the solution
  • Add a precipitant to initiate the reaction
  • Filter the mixture to remove excess precipitant
  • Collect and dry the crystals
• Step 2

  • The mixture may be heated to speed up the reaction
  • When no more of the precipitant is required, it means all the solute has crystallized and there should be a little excess solid
• Crystallization

  The process of forming a crystal from a solution
• Filter paper


  A paper that is used to separate a solid from a liquid