Filtration, Crystallisation and Evaporation

• What techniques can be used to separate soluble and insoluble solids from liquids?

  Filtration, evaporation, and crystallization
• What is formed when a solid does not dissolve in a liquid?

  A mixture between a liquid and an insoluble solid
• What is an example of an insoluble solid in water?

  Sand
• What do we call a liquid that contains a soluble solid dissolved in it?


  A solution
• In a solution of sodium chloride in water, what is the solute?

  Sodium chloride
• What is the purpose of filtration in separating mixtures?

  To separate insoluble solids from liquids
• What is the role of filter paper in the filtration process?

  To allow liquids to pass through while retaining solids
• How does filtration in chemistry differ from using a sieve in cooking?

  Filtration uses filter paper with tiny holes, while a sieve has larger holes
• What happens when a soluble solid is dissolved in a liquid?

  It forms a solution that cannot be filtered
• What are the two options for separating a soluble solid from a liquid?

  Evaporation and crystallization
• What is the process of evaporation in separating solids from solutions?

  Heating the solution to evaporate the solvent, leaving behind solid crystals
• What is the benefit of using evaporation to separate solids from a solution?

  It is a relatively quick and easy method
• What is thermal decomposition?

  When some solids break down into different substances when heated
• Why might crystallization be preferred over evaporation for some solids?

  Because it prevents thermal decomposition of the solid
• What is the first step in the crystallization process?

  To place the solution into an evaporation dish and heat it gently
• What happens to the solubility of solids as the temperature decreases during crystallization?

  Solids become less soluble at colder temperatures
• After crystals form in the crystallization process, what is the next step?

  To filter out the crystals from the remaining solution
• How can crystals be dried after crystallization?

  By leaving them somewhere warm or warming them in an oven
• What should you do if you enjoyed the video?

  Give a like and subscribe
• Evaporation is used to remove water from solutions, leaving behind concentrated solutes.
• Crystallization involves cooling or evaporating a solution to form crystals that can be separated from the liquid phase.
• Filtration is the process of separating solids from liquids by passing them through a filter medium.