C1.4 separating mixtures

Question 1

Evaporation

Answer 1

Used in a mixture with a liquid and a soluble solid; the solid will not evaporate and will be left over when the liquid evaporates

Question 2

Distillation

Answer 2

Used to separate two liquids in a solution; a flask contains a liquid mixture to be heated to a boil, the component with the lower boiling point will change into a gas, upon contact with the water-cooled condenser, the gas will condense, trickle down into the graduated cylinder, and the other liquid remains in the flask

Question 3

Filtration

Answer 3

used to separate a mixture containing an undissolved solid in a liquid; The mixture is poured into a funnel and the liquid falls through. The solid is left in the funnel

Question 4

Paper chromatography

Answer 4

used to separate compounds based on the different solubility in solvents; The sample is placed on a piece of paper, water is then poured so that the water level is just below the paper line. After it has finished, to get the Rf value one must divide the distance moved by the substance by the distance moved by the solvent