separating techniques

Question 1

simple distillation is what

Answer 1

.Simple distillation works because the dissolved solute has a much higher boiling point than the solvent. When the solution is heated, solvent vapour evaporates from the solution. The gas moves away and is cooled and condensed. The remaining solution becomes more concentrated in solute as the amount of solvent in it decreases.

Question 2

fractional distillation is what

Answer 2

the same thing happens as for simple distillation, BUT the higher boiling point liquid condenses in the fractionating column and drips back into FLASK

Question 3

filtration is what

Answer 3

the insoluble solid and liquid mixture is poured into filter paper the liquid passed through to form the filtrate the solid remains on the filter paper as residue

Question 4

crystallisation is what

Answer 4

the soluble solid and solvent mixture is boiled, the mixture cools and the remaining solvent evaporates leaving crystals of soluble solid

Question 5

chromatography is what

Answer 5

sample spots are placed on a pencil line above the solvent line, over time the sample spots creep up the chromatography paper.