Slide 1
Separating Mixtures
Slide 2
IV. Separating Mixtures
A. Filtration
• Filter paper separates large particles from a mixture
 Residue  Substance stopped by the filter paper
 Filtrate  Material that passes through the filter
• Ex: Separating clay and water
B. Evaporation
• Liquid portion of solution evaporates
• Used to recover the solute in a solution
• Ex: Recovering salt from salt water
Slide 3
C. Distillation
• Liquid portion of solution evaporates, then condenses
• Used to recover the solvent in a solution
 Distillate  Condensed substance that is collected
 Residue  Substance that remains in the flask
• Ex: Recovering water from salt water (desalination)
Slide 4
D. Magnetism
• Removes ferromagnetic materials
 Include iron, cobalt, and nickel
E. Floatation
• Separates materials less dense than water
• Ex: Wood chips float on the surface of water
F. Sifting
• Uses a sieve or strainer to separate the coarse parts from
the finer material in a mixture
• Ex: Flour is sifted to remove coarse particles