Filtration and crystalisation

• crystallisation definition

  A process to form solid crystals from a solution by evaporating the solvent.
• what are the first 2 process steps of crystallisation

  1. Gently heat the solution in an evaporating basin to remove some water.

  2.Stop heating when crystals form on a glass rod.
• what are the 3rd and 4th process step of crystallisation

  3. Let the solution cool to allow more crystals to form.

  4. Filter out the crystals and leave them to dry in a warm place.
• filtration definition


  A method to separate an insoluble solid from a liquid, e.g., sand from sand and water.
• what are the 3 process steps to filtration

  1.Pour the mixture into filter paper placed in a funnel.

  2.The solid remains as residue on the filter paper.

  3.The liquid passes through as filtrate and is collected in a conical flask.
• what equipment is needed for filtration

  Filter paper, filter funnel, conical flask.