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 separate elements in a compound
• What is one example of a method to separate elements in compounds?

  Chemical reactions such as reduction
• What is the focus of this video on physical separation techniques?

  • Filtration
  • Crystallization
• What is filtration used for?

  To 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 a solid?

  S
• What is the state symbol for a liquid?

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

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

  By using filtration
• What equipment is used in the filtration process?

  A filter funnel and filter paper
• What is the liquid that passes through the filter paper called?

  Filtrate
• What does crystallization separate?

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

  Sodium chloride dissolves to form a solution
• What is the state symbol for a substance dissolved in water?

  AQ
• What occurs when the sodium chloride solution is left for a few days?

  The water evaporates, leaving behind crystals of sodium chloride
• How can crystallization be accelerated?

  By gently heating the solution
• What should be considered when heating certain chemicals during crystallization?

  Some chemicals may break down if heated
• What are the key physical separation techniques discussed in the video?

  • Filtration
  • Crystallization