Separation of Mixtures Flashcards
What are the five main types of separation?
Sieving, Evaporation, Filtration, Decanting and Distillation.
What is sieving?
Sieving is when two solids are separated from each other by a sieve.
What are the three types of mesh?
There is a fine mesh, medium mesh and coarse mesh. Fine mesh has small holes, medium mesh medium holes and coarse mesh large holes.
What is evaporation(in separation)?
Evaporation is where a solution(like salt water) is separated when the solution is heated up. The solvent - water in this case - evaporates, leaving the solute - salt - behind.
What is filtration?
Filtration is when a solid and a liquid are separated by some filter paper. The filter paper leaves the pure solid, or residue, trapped in the filter paper, while the pure liquid, or filtrate, is left in the container.
What is decanting?
Decanting is the process in which a container of a solid and liquid is put down, so that the solids can settle to the bottom. It is then that the liquid is carefully poured out, so that the solids are not disturbed.
What is distillation?
Distillation is where a solution is separated by evaporation and condensation.
The solution which is in the distilling flask is heated up by a Bunsen burner, and the solvent evaporates, leaving the solute behind. The vapour then travels into the Liebeg Condenser, where the gas is condensed. The pure solvent, or distillate drips into the receiving flask.
