LESSON 4_ METHODS OF SEPARATING COMPONENTS OF MIXTURES AND COMPOUNDS

Question 1

It is the process of separating the insoluble solid from the liquid substance

by allowing the liquid to pass through a porous material called filtering agent

Answer 1

Filtration

Question 2

This is a method used to separate the liquid layer supernatant and a heavy insoluble solid known as precipitate

by allowing the said solid to settle at the bottom of the container then the liquid above the solid is poured off carefully into another container

Answer 2

Decantation

Question 3

This involves the use of forceps, sieves, magnet and other similar tools to separate the components of mixtures. Sand and gravel are separated by passing the mixture over a wire screen

Answer 3

Mechanical separation

Question 4

This is a process that involves the evaporation and condensation of a liquid solvent from a mixture or solution.

This method uses the difference in boiling points of the components of a mixture.

Answer 4

Distillation

Question 5

This process uses the difference in the degrees to which substances are absorbed on the surface of an inert substance such as a filter paper

Answer 5

Chromatography

Question 6

This is a chemical decomposition or breakdown produced by passing an electric current through a liquid or solution containing ions

Answer 6

Electrolysis

Question 7

It is the process that uses a motor device known as centrifuge that speeds up the settling of the precipitate using centrifugal or rotating motion

Answer 7

Centrifugation