filteration, crystalisation, distillation, chromotography

Question 1

what is filtration?

Answer 1

filtration is used to separate an insoluable solid from a liquid. it can also separate a solution from an insoluable solid.

Question 2

how does filtration work?

Answer 2

pour the mixture through filter paper in a filter funnel, leaving residue in the filter paper and the liquid in a beaker.

Question 3

what is chromatography?

Answer 3

when a solution that contains more than one dissolved substance those substances can be separated using chromatography.

Question 4

how does chromatography work?

Answer 4

add a dot of the ink on to the chromatography paper, dip the paper in water, allowing the water to rise up the paper, separating the different colours in the ink.

Question 5

what is distillation?

Answer 5

to separate two liquids with different boiling points we use a separating technique known as distillation.

Question 6

how does distillation work?

Answer 6

heat both liquids in a round-bottomed flask, the liquid with the lowest boiling point will boil then condense once it reaches the condenser separating the two liquids.

Question 7

what is crystallisation?

Answer 7

to separate a solvable solid which is in a solution such as salt dissolved in water we use crystallisation.

Question 8

how do you do crystallisation?

Answer 8

heat the mixture in an evaporating basin using a bunsen burner allowing the liquid to boil (evaporate) leaving the salt as crystals