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Grade 6 Science > SEPARATING HOMOGENEOUS MIXTURE > Flashcards

SEPARATING HOMOGENEOUS MIXTURE Flashcards

1
Q

IS COFEE AN EXAMPLE OF HOMOGENOUS MIXTURE?

YES OR NO

A

YES

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2
Q

TRUE OR FALSE

these solid substances do not necessarily dissolve in one another, physical processes like tumbling and crushing are used to ensure that the components are evenly
distributed ARE CALLED HOMOGENEOUS MIXTURE

A

FALSE

IT IS A HETEROGENEOUS MIXTURE SINCE NO SUBSTANCE WS DISSOLVED TO ANOTHER

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3
Q

TRUE OR FALSE

Some solids, when mixed together form homogeneous mixtures.

A

TRUE

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4
Q

_________________is the application of heat to a solid, so it changes to a liquid above a temperature called the melting point.

A

Melting

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5
Q

WHAT IS THE homogeneous mixtures of metals?

A

ALLOYS

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6
Q

GIVE OME EXAMPLE OF ALLOYS

A

Cooking utensils, metal
casings, and some electronic parts are made of alloys too.

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7
Q

It is the process of turning liquids into vapor (gas) by heating.

A

Evaporation

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8
Q

In this process, a solid and
liquid solution is heated until it boils.

A

Evaporation

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9
Q

TRUE OR FALSE

Once the solution boils, the liquid solvent starts to evaporate and leaves behind solid solutes.

A

TRUE

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10
Q

EXPLAIN THE PROCESS OF EVAPORATION

A

a solid and
liquid solution is heated until it boils.

Once the solution boils, the liquid solvent starts to
evaporate and leaves behind solid solutes.

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11
Q

TRUE OR FALSE

The case for solid solvent and liquid solute separation can also not be done through evaporation.

A

false

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12
Q

is a separation method wherein a liquid substance changes into a solid
form.

A

Crystallization

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13
Q

form. It usually happens when the liquid from a solution has evaporated to a point beyond
the solubility limit

A

Crystallization

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14
Q

is the ability of a substance to dissolve in a given amount of solvent at a specific temperature.

A

Solubility

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15
Q

true or false

in solubility
Solid crystals will then grow out of the
solution because the solution is too concentrated for all the solids to remain dissolved at that temperature.

A

true

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16
Q

TRUE OR FALSE

Crystallization is often done from a cold concentrated solution because most substances are more soluble when the liquid is hot

A

FALSE

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17
Q

TRUE OR FALSE

During Crystallization, cooling it,
crystals form as the solubility gets less and less.

A

TRUE

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18
Q

is a separation technique that makes use of the difference in boiling points
between two liquids.

A

Distillation

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19
Q

In order for the technique to work, the components should have a
large enough difference in boiling points so that when one component boils, the other remains as a liquid.
WHT TECHNIQUE IS IT?

A

Distillation

20
Q

EXPLAIN HOW DISTILLATION WOK

A

EXAMPLE
WATER AND ACETONE SOLUTION
acetone has a lower boiling point (560 °C) compared with water (100 °C). When the solution is boiled, the acetone vapor boils anD evaporates first, leaving the water in the flask.

21
Q

WHAT IS THE PRODUCT OF DISTILLATION?

A

distillate

22
Q

distillation. This process is often used to separate crude oil to
different fuels, such as gasoline, kerosene, and lubricating oil.

A

Distillation

23
Q

is a separation technique that heavily relies on the differences in solubility
of each solute in a solvent.

A

Chromatography

24
Q

WHAT ARE THE TWO IMPORTANT PHASES OF CHROMATOGRAPHY?

A

mobile phase,
stationary phase,

25
Q

IN CHROMOTOGRAPHY WHAT IS THE MOBILE PHASE?

A

the solvent,

26
Q

IN CHROMOTOGRAPHY WHAT IS THE STATIONARY PHASE?

A

absorbent material that holds the liquid solution still.

27
Q

TRUE OR FALSE

the stationary phase is solvent material, it allows the mobile phase to pass through it and travel along.

28
Q

IN CHROMATOGRAPHY

As the mobile phase runs through the stationary phase, the components
of the liquid solution separate based on their solubility in the given solvent.

TRUE OR FALSE

29
Q

IT IS A TYPE OF CHROMATOGRAPHY which makes use of paper as the
stationary phase, and a solvent (water) as the mobile phase.

A

paper chromatography

30
Q

what do you call the result of a
chromatography experiment

A

chromatogram,

31
Q

name the applications of separating Homogeneous mixtures

A

are used to purify chemicals to acceptable standards (for example paracetamol, aspirin)

refinery (distillation of gasoline, kerosene etc)

32
Q

homogeneous solid - liquid can be sparated by what process?

A

evaporation,
Crystallization

33
Q

homogeneous liquid - liquid can be sparated by what process?

A

distillation
Chromatography

34
Q

true or false

Separating homogeneous mixtures plays an important role in several industrial processes.

35
Q

Dilution is the amount of solute that is soluble in a particular solvent.

36
Q

It is the output obtained from a chromatography

experiment.

A

CHROMATOGRAM

37
Q

It is the solvent used in chromatography.

A

mobile phase,

38
Q

It is the collected pure substance after distillation.

A

distillate

39
Q

It is the ability of a substance to dissolve another
substance, which is the basis for crystallization.

A

Solubility

40
Q

It refers to the adsorbent material that holds the solvent in chromatography.

A

stationary phase,

41
Q

It is the laboratory apparatus used in distillation.

A

A distilling flask

42
Q

CHOOSE THE LETTER OF YOUR ANSWER

evaporation

a. involves a mobile phase and a
stationary phase

b. involves the separation of a
solid solute from a liquid
solvent

c. a method where the difference
in boiling point is used to
separate the components

d. a method where the difference
in melting point is used to
separate the components

A

b. involves the separation of a
solid solute from a liquid
solvent

43
Q

CHOOSE THE LETTER OF YOUR ANSWER

CHROMATOGRAPHY

a. involves a mobile phase and a
stationary phase

b. involves the separation of a
solid solute from a liquid
solvent

c. a method where the difference
in boiling point is used to
separate the components

d. a method where the difference
in melting point is used to
separate the components

A

a. involves a mobile phase and a
stationary phase

44
Q

CHOOSE THE LETTER OF YOUR ANSWER

DISTILLATION

a. involves a mobile phase and a
stationary phase

b. involves the separation of a
solid solute from a liquid
solvent

c. a method where the difference
in boiling point is used to
separate the components

d. a method where the difference
in melting point is used to
separate the components

A

c. a method where the difference
in boiling point is used to
separate the components

45
Q

CHOOSE THE LETTER OF YOUR ANSWER

CRYSTALLIZATION

a. involves a mobile phase and a
stationary phase

b. involves the separation of a
solid solute from a liquid
solvent

c. a method where the difference
in boiling point is used to
separate the components

d. a method where the difference
in melting point is used to
separate the components

A

d. a method where the difference
in melting point is used to
separate the components

Grade 6 Science (6 decks)

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