Lesson 3

Question 1

In preparing coffee using the Barako coffee
beans, you may pour the boiled coffee mixture
into a piece of cloth. Which method is being
illustrated?

Answer 1

Filtration

Question 2

In a laboratory setting, you have a mixture of
different colored pigments. Which technique
would you likely use to separate these pigments
for analysis?

Answer 2

Chromatography

Question 3

When separating a mixture of sand, salt, and
water, what sequence of techniques could be
applied to obtain the pure salt?

Answer 3

Filtration, Evaporation, Decantation

Question 4

When considering the separation of a mixture
through distillation, what property of the
components is essential for the process to be
effective?

Answer 4

Boiling point

Question 5

Suggest a separation method to be done on the
following mixture to separate its components.
Perfume
Cartridge ink
Crude oil
Rock salt and cornstarch
Saltwater and sand

Answer 5

Perfume – Use distillation
Cartridge ink – Use chromatography.
Crude oil – Use fractional distillation
Rock salt and cornstarch – Use dissolution and filtration
Saltwater and sand – Use filtration and evaporation.

Question 6

o In this process, a solution is heated until it boils.
o Once it boils, the liquid solvent starts to
evaporate and leave behind the solid solutes.

Answer 6

Evaporation

Question 7

can be used to separate
solutions.

Answer 7

Recrystallization

Question 8

refers to the amount of substance
that can be dissolved in a given solvent at a
certain temperature.

Answer 8

Solubility

Question 9

used to separate
components of liquid
solutions

Answer 9

distillation
setup

Question 10

separates
components of a solution based
on differences in boiling points
between the two liquid
components.

Answer 10

Distillation

Question 11

Types of Distillation

Answer 11

Simple distillation
Fractional distillation
Vacuum distillation
Steam distillation

Question 12

is used when there is a large difference in the
boiling points of the components of the solution

Answer 12

Simple distillation

Question 13

is used when there is a relatively small
difference in the boiling points of the components of the solution.

Answer 13

Fractional distillation

Question 14

is used for compounds with very high boiling
points.

Answer 14

Vacuum distillation

Question 15

is used for compounds that are heat-sensitive.

Answer 15

Steam distillation

Question 16

is the
laboratory glassware that
is used to contain the
mixture that will be
distilled.

Answer 16

Distilling flask

Question 17

Aids in the
condensation of the
vapors or the change of
vapors to liquids

Answer 17

Condenser

Question 18

The pure substance with the lower boiling point is called the

Answer 18

distillate or the product of distillation.

Question 19

The substance that remains in the distilling flask after
distillation is called the .

Answer 19

residue

Question 20

There must be a large difference in
the boiling points of the liquid
components in order to perform
distillation as a separation technique
for liquid mixtures.

Answer 20

TRUE

Question 21

is a separation
technique that relies on the
differential partition of the
components between the two
important phases in

Answer 21

Chromatography

Question 22

The result of a chromatography experiment is called a

Answer 22

chromatogram

Question 23

Separation of Homogeneous Mixtures

Answer 23

Evaporation
Recrystallization
Distillation
Chromatography

Question 24

Separation of Heterogeneous Mixtures

Answer 24

Manual picking
Sieving
Magnets
Filtration
Sedimentation
Centrifugation

Question 25

using your hands or tongs can be done in separating the components of these kinds of mixtures.

Answer 25

Manual picking

Question 26

exploits the difference in particle size of solids.

Answer 26

Sieving

Question 27

can be used to attract magnetic materials.

Answer 27

Magnets

Question 28

is a process of separating solids from liquids by allowing the mixture to pass through a filtering materia

Answer 28

Filtration

Question 29

The coffee grounds collected on the filter paper are known as the _______ while the brewed coffee is known as the ________.

Answer 29

residue filtrate

Question 30

is the process in which suspended solids will eventually separate from liquids by gravity.

Answer 30

Sedimentation

Question 31

Once the solid particles settle at the bottom, the liquid may be separated through

Answer 31

decantation.

Question 32

An easier way to separate immiscible liquids is by using a

Answer 32

separatory funnel.

Question 33

is a process in which the suspension or colloid is rotated at very high speeds.

Answer 33

Centrifugation

Question 34

In the chemical and pharmaceutical industry, _______are used to purify chemicals to acceptable standards.

Answer 34

separation techniques

Question 35

In the petroleum industry, _______ is often used as a method to purify products. o A refinery is an industrial site that is used to refine substances like oil, alcohol, and other substances. c

Answer 35

distillation

Question 36

In the wastewater industry, separation techniques such as _________ are used to recover water from used water.

Answer 36

sedimentation, centrifugation, microfiltration, and distillation

Question 37

In the field of health and medicine, ________ is used to separate the components of blood or urine for further laboratory testing.

Answer 37

centrifugation

Question 38

Identify the separation techniques 1. colored clothes from white clothes 2. chalk and water 3. boiled noodles in water 4. sand and gravel 5. Baby oil and water

Answer 38

manual picking Filtration Filtration Sieving Decantation