Question | Answer |
Hand Separation
Mechanical Mixture (Solid in a Solid) | Use: when large chunks present among other solids
Can use tools - tweezer, magnets |
Gravity Separation
Mechanical Mixture (Solid in solid) | Use: when density of the solid is much different from the density of the other solids |
Solvent Extraction
Mechanical Mixture (Solid in solid) | Use: one solid dissolves in a particular solvent |
Chromatography
Mechanical Mixture (Solid in solid/solid in a liquid) | Use: solids are coloured and are soluble in a solvent or a mixture of solvents |
Hand Separation
Mechanical Mixture (Solid in liquid) | Use: when large pieces of solid are present in the liquid |
Gravity Separation
Mechanical Mixture (Solid in liquid) | Use: solid particles are present in a small amount of liquid
(KD) |
Filtration
Mechanical Mixture (Solid in liquid) | Use: solid particles are present in liquid (sand in water) |
Evaporation
Solutions (Solid in liquid) | Use: solid is wanted and the liquid is not |
Distillation
Solutions (Solid in liquid) | Use: the liquid is wanted; the solid may or may not be wanted |
Solvent Extraction
Solutions (Solid in liquid) | Use: an immiscible solvent dissolves at least one but not all of the solids present
(Paint thinner and iodine mixture with water) |
Recrystallization
Solutions (Solid in liquid) | Use: one solid is dissolved, the liquid is not wanted
(impure substance and want pure substance) |
Distillation
Solutions (Liquid in liquid) | Use: two or more liquid is present with different boiling points |
Solvent Extraction
Solutions (Liquid in liquid) | Use: immiscible solvent dissolves at least one of the liquids present |