Separating Mixtures

Question 1

Complete the sentence using one of the following words: filtration, distillation, or chromatography.

Separation of two or more pure liquids by heating is

Answer 1

distillation

Question 2

In which of the following ways would one separate a miscible solution of benzene and chloroform?

Answer 2

By distillation

Question 3

If you want to separate different pigments extracted from leaves, which method of separation is most effective?

Answer 3

chromatography

Question 4

Separation by physical size is ______

Answer 4

filtration

Question 5

Dela is helping his Aunt Starr on an archeological dig. His aunt gives him a bucket containing sand, rocks, and artifacts. What is the best way for Dela to separate the sand from the other materials?

Answer 5

Use a screen to filter out the sand

Question 6

Which of the following is a viable method of separating gasoline from crude oil?

Answer 6

distillation

Question 7

What method would likely be used to separate a mixture of colored inks?

Answer 7

chromatography

Question 8

What separation technique involves passing the mixture through a medium in which the components move at different rates?

Answer 8

chromatography

Question 9

Which of the following processes is used to separate and collect alcohol from a mixture of alcohol and water?

Answer 9

fractional distillation

Question 10

Complete the sentence using one of the following words: filtration, distillation, or chromatography.

Separation of two or more pure liquids by heating is

Answer 10

distillation

Question 11

What separation technique separates liquids using differences in their boiling points?

Answer 11

distillation

Question 12

Which method of separation would be most effective to achieve the following diagram (A and B are two liquids with different boiling points).

Answer 12

distillation

Question 13

Complete the sentence using one of the following words: chromatography, distillation, or evaporation. _____ separates components in a mixture at different rates as they pass through a medium.

Answer 13

chromatography

Question 14

This method describes separation based on differences in boiling points.

Answer 14

distillation

Question 15

The diagram shows two molecules (A and B) with different rates of travel on silica gel plate. Which method of separation would be most effective to separate a mixture of A and B?

Answer 15

chromatography

Question 16

What separation technique involves passing a liquid through a material with small pores that allow some substances to pass through?

Answer 16

filtration

Question 17

What separation technique is used to separate a dissolved solid from the liquid in which it is dissolved?

Answer 17

evaporation

Question 18

Which method of separation would be most effective to achieve the following diagram?
A(|)
+ —> A(|)
B(S)

Answer 18

filtration

Question 19

True or False:

Distillation describes separation by passing fluid through a selectively permeable layer.

Answer 19

false

Question 20

Complete the sentence using one of the following words: chromatography, distillation, or evaporation
In ___ , solids can be separated from liquids by heating the liquid and removing it.

Answer 20

Evaporation

Question 21

Filtration is a process in which a liquid is first converted into vapor by heat and then condensed by cooling.

Answer 21

false

Question 22

The distillation process cannot convert vapor back into a liquid.

Answer 22

false

Question 23

Distillation is the most effective separation method in separating ethanol and water.

Answer 23

true

Question 24

Distillation is the process of converting a liquid into a vapor (by heating) and the subsequent condensation of that vapor back into a liquid

Answer 24

true

Question 25

While carrying out filtration of a solution, the substance which remains on the filter paper is the water-soluble part.

Answer 25

false

Question 26

A solution containing volatile impurities may be purified with a simple distillation.

Answer 26

true

Question 27

The process of separating different dissolved constituents in a mixture by their adsorption over an appropriate adsorbing material is called chromatography.

Answer 27

true