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Chemestry > Chapter 2 Separation Techiniques > Flashcards

Chapter 2 Separation Techiniques Flashcards

1
Q

What are properties of a pure substance

A

It has fixed melting point

It has a fixed boiling point

Has a specific density

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2
Q

Name two types of solvent

A

Inorganic solvent

Organic solvent

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3
Q

What’s fraction distillation

A

Separation of liquid with different boiling point

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4
Q

What’s flotation

A

Used in separating of immiscible liquid

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5
Q

What can we use to separate iron and wood shavings

A

Magnetism

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6
Q

How can u determine the purity of a substance

A

By boiling point
By melting point
By its density

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7
Q

What method used to separate sodium chloride from copper

A

Crystallization

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8
Q

What is used to manufacture plastic for making basket

A

Polymerization

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9
Q

What’s the RF value of solute in chromatography

A

This is the distance traveled by a given component divided by the distance travelled by a solvent front

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10
Q

What is used to separate oil from water

A

Separating funnel

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11
Q

What’s a solution

A

A mixture of a solvent and a solute

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12
Q

Name one organic solvent

A

Water

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13
Q

What’s the application use of fractional distillation

A

Separation of oxygen and nitrogen from liquid

Separation of crude oil

Making of alcohol

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14
Q

Name one example which flotation can be used to separate the two

A

Cooking oil and oil

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15
Q

What’s filtration used for

A

Liquid from an insoluble liquid

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16
Q

Name a solvent which would dissolve a salt like sodium chloride

A

Water

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17
Q

What is chromatography

A

Used to separate dyes

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18
Q

What is used to produce carbon dioxide from carbon

A

Combustion

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19
Q

What are commercial applications of chromatography

A

Identifying flavoring components in food staffs

Separating pigment of plants

Separation of antibiotics drugs

Separation amino acid from proteins

20
Q

What’s a solvent

A

Is a liquid which dissolve in a solvent

21
Q

What’s crystallization

A

Used to separate mixture of those that not form crystal

22
Q

What’s centrifugation

A

Used to separate liquid from immiscible liquid

23
Q

What is used separate water and maize

A

Filtration

24
Q

What’s a compound which is able to dissolve in wax

A

Kerosine or paraffin

25
Q

How can you obtain salt from sea water

A

Crystallization

26
Q

What can we separate using distillation

A

Mixture of solute and a solvent

27
Q

What is used to separate salt from paraffin

A

Evaporation

28
Q

What’s a solute

A

A solid which dissolve in a solvent

29
Q

Name one example of crystallization

A

Copper II sulphate and lead chloride

30
Q

What is used to measure volume of water accurate 25cm

A

Pipette

31
Q

How can a student get salt crystals from maize meal and salt

A

Frittering, evaporation and crystallization

32
Q

How can u obtain water from sea water

A

Distillation

33
Q

What’s the use of simple distillation

A

Medicines

Car batteries

34
Q

What can we use separate sulphur from iron fillings

A

Magnetism

35
Q

What the other name for sodium chloride

A

Common salt known as table salt

36
Q

What’s simple distillation

A

Is a technique used separate a solute from a solvent

37
Q

What is sublimation

A

Used to separate substances which sublime from that does not sublime

38
Q

What measures volume of a liquid having 37cm

A

Burette

39
Q

What properties enable substance to be separated by fraction distillation

A

Difference in boiling points

40
Q

How can u obtain sand from sea water

A

Filtration

41
Q

Why is it suitable to use a pencil to mark the baseline in chromatography instead of ink

A

Because ink contain mixture of dyes and can disturb the reaction than a pencil

42
Q

What’s the use of distilled water

A

Car batterie

In hospital making medicine

Laboratories

43
Q

What’s the function of lie berg condenser

A

To cool down water vapor

44
Q

Name an example of a sublimation reaction

A

Ammonia chloride and sodium oxide

45
Q

What is chromatography

A

Separation of dyes

46
Q

What is segmentation

A

Used separate insoluble solid from a liquid

47
Q

What’s magnetism

A

Used to separate magnets from non magnets

Chemestry (7 decks)

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