simple distillation

• What is the purpose of crystallization?

  To separate a dissolved solid from a liquid
• What is a solution in water called?

  Aqueous solution
• What happens when you gently heat a solution of sodium chloride in water?

  Water evaporates, leaving sodium chloride crystals
• What is the main problem with crystallization if you want to keep the liquid?

  It does not allow liquid recovery
• What is the first stage of simple distillation?

  Evaporate the liquid by heating
• What is the second stage of simple distillation?

  Condense the vapor back to a liquid
• What apparatus is used to carry out simple distillation?

  A flask, glass tube, and condenser
• How does the condenser work in simple distillation?

  It keeps the internal glass tube cold
• What is the role of the thermometer in simple distillation?

  To monitor the temperature of the vapor
• What happens to the vapor as it passes through the condenser?

  It condenses back to a liquid
• What can simple distillation produce from seawater?

  Drinking water
• Why is simple distillation not commonly used to produce drinking water?

  It requires a great deal of energy
• What is the difference between simple distillation and fractional distillation?

  Fractional distillation separates multiple components
• What are the steps involved in simple distillation?

  1. Heat the solution to evaporate the liquid.
  2. Vapor rises through the glass tube.
  3. Vapor passes into the condenser.
  4. Vapor condenses back into liquid.
  5. Collect the liquid in a beaker.
  6. Crystals of solid remain in the flask.
• What are the advantages and disadvantages of using simple distillation for water purification?

  Advantages:

  • Can produce drinking water from seawater.

  
  

  Disadvantages:

  • Requires a great deal of energy.
  • Not efficient for large-scale production.