topic 2

• What is the difference between simple distillation and fractional distillation?


  fractional distillation separates a mix of 2 liquids and simple distillation separates a mix of a solvent and solute
• What is an example of a pure element?

  oxygen
• What is an example of a pure compound?

  Carbon dioxide
• What is a pure substance?


  Contains only one substance
• What is an Impure substance?


  mixtures of different elements, compounds or both
• Pure substances have a single melting and boiling point
• Impure substances melt over a range of temperatures
• The melting point of impure substances are often less than a pure substance
• the purity of an element can be established using it's melting point
• Label the heating curve

  A) Solid

  B) Liquid

  C) Gas

  D) Melting

  E) evapourating

  
• What is a formulation?


  A mixture that has been deliberately created for a certain purpose
• What are some examples of formulations?


  Paint, Food and drink, Medicine
• What is insoluble?


  Can't dissolve
• What is soluble?


  a substance that can dissolve
• What is filtration?

  a separation technique which separates and insoluble from a liquid
• what is a solute?


  a solid
• what is a solvent?


  liquid
• what is a solution?


  a solid dissolved in a liquid
• Label this filtration diagram:

  A) Filter paper

  B) Conical flask

  C) Filtrate

  D) residue

  E) Funnel

  
• Label this Cyrillization diagram:

  A) Evapourating dish

  B) Mixture

  C) Wire gauze

  D) Tripod stand

  E) Bunsen burner

  
• label this simple distillation graph:

  A) Water in

  B) Water out

  C) COndenser

  D) Bunsen burner

  E) Beaker

  F) Round bottom flask

  
• Crystallisation is used to seperate a soluable from a solvent
• What is a saturated solution?


  has the maximum amount of solute dissolved in it
• Distillation works because the parts of a mixture have different boiling points
• The pure liquid collected is called the distillate
• How to find the percentage difference?


  your value - 100 / 100 x 100
• Label the fractional distillation diagram:

  A) Thermometer

  B) Water out

  C) Water in

  D) Condenser

  E) Fractionating collumn

  F) Round bottom flask

  G) Bunsen burner

  
• In fractional distillation each group of substances is called a fraction.
• What is chromatography?


  a technique used to separate mixtures
• what is the stationary phase in paper chromatography?


  The paper
• what is the mobile phase in paper chromatogthaphy?


  The water
• Label the chromatography diagram:

  A) Solvent

  B) Chromatography paper

  C) Ink spot

  D) Beaker

  E) Wood

  F) Solvent front

  G) Pencil line