filtration and crystallisation

• What are physical separation techniques used for?

  To separate mixtures
• Can physical separation techniques be used to separate elements in a compound?

  No, they cannot be used to separate elements in a compound
• What is one example of a method to separate elements in compounds?

  Chemical reactions such as reduction
• What are the two physical separation techniques focused on in this video?

  • Filtration
  • Crystallization
• What does filtration separate?

  An insoluble solid from a liquid
• What does the term "insoluble" mean?

  It means that the solid will not dissolve in the liquid
• What is the state symbol for silver chloride?

  S (solid)
• What is the state symbol for water?

  L (liquid)
• What happens to silver chloride when mixed with water?

  It does not dissolve
• How do you separate silver chloride from water using filtration?

  By pouring the mixture into filter paper
• What is the filtrate in the filtration process?

  The liquid that passes through the filter paper
• What is crystallization used for?

  To separate a soluble solid from a liquid
• What happens when sodium chloride is mixed with water?

  It dissolves to form a sodium chloride solution
• What does the state symbol AQ represent?

  Aqueous solution, meaning dissolved in water
• How can you speed up the crystallization process?

  By gently heating the solution
• Why might it be better to allow water to evaporate on its own during crystallization?

  Because certain chemicals may break down if heated
• What are the steps involved in the crystallization process of sodium chloride from water?

  1. Dissolve sodium chloride in water to form a solution.
  2. Allow the solution to sit for a few days for evaporation.
  3. Collect the resulting solid sodium chloride crystals.
• What happens to the state symbol of sodium chloride when it crystallizes from an aqueous solution?

  It changes from AQ to S (solid)
• What is the main purpose of using a filter funnel and filter paper in filtration?

  To separate the solid from the liquid
• How does filtration differ from crystallization in terms of the types of substances they separate?

  Filtration separates insoluble solids from liquids, while crystallization separates soluble solids from liquids