10 Separation of Mixtures

Question 1

substance consisting of two or more pure substances that are physically mixed BUT not chemically combined

Answer 1

Mixtures

Question 2

most of them can be separated by physical means, and the kind of separation method depends on what type of mixture it is

Answer 2

Mixtures

Question 3

practical way of separating when the particles in the mixture are relatively large and when there are not too many of them to sort

Answer 3

Manual Separation/Sorting

Question 4

ideal for separating mixtures of at least two solids with one part having magnetic properties like metals of iron, nickel and cobalt

Answer 4

Magnetic Separation

Question 5

separating a mixture of sand and iron fillings

Answer 5

Magnetic Separation

Question 6

used to separate an insoluble solid from a liquid by allowing the solid to settle down called sedimentation

Answer 6

Decantation

Question 7

separation of soil and water

Answer 7

Decantation

Question 8

used to separate two liquids that do not dissolve very well in each other (immiscible liquids) due to unequal density

Answer 8

Decantation by Funnel Separation

Question 9

separation of oil and water

Answer 9

Decantation by Funnel Separation

Question 10

used to separate an insoluble solid from a liquid using a filter

Answer 10

Filtration

Question 11

used in water treatment plants, vacuum cleaner, tea or coffee making

Answer 11

Filtration

Question 12

separation of sand and water

Answer 12

Filtration

Question 13

used in separating mixture (solution) of a soluble solid and a solvent

Answer 13

Evaporation

Question 14

used to obtain salt from sea water

Answer 14

Evaporation

Question 15

used in separating one substance from a solution through evaporation followed by condensation

Answer 15

Simple (Steam) Distillation

Question 16

separation of pure water from a salt solution

Answer 16

Simple (Steam) Distillation

Question 17

used in separating substances of two or more miscible liquids at different boiling points called fractions

Answer 17

Fractional Distillation

Question 18

separation of ethanol and water

Answer 18

Fractional Distillation

Question 19

used to separate particles from a mixture through spinning by applying a centrifugal force

Answer 19

Centrifugation

Question 20

uses a centrifuge – a device that separates particles from a solution through use of a rotor

Answer 20

Centrifugation

Question 21

used widely in separating blood components & milk fats from milk

Answer 21

Centrifugation

Question 22

used to separate mixtures of substances
into their components like color pigments

Answer 22

Chromatography

Question 23

uses a stationary phase and a mobile phase

Answer 23

Chromatography

Question 24

used by some forensic investigators to detect minute levels of narcotics, OTC drugs in blood & urine samples or to
identify the inks used in ransom notes, forgeries and even counterfeit currency

Answer 24

Chromatography

Question 25

separation & identification of different chemicals in an ink

Answer 25

Paper Chromatography

Question 26

retention factor or the Rf value

Answer 26

Paper Chromatography