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Chem > Woordjes > Flashcards

Woordjes Flashcards

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1
Q

Adsorbtion

A

This is a separation method that makes the diff in adhesion of substances to an adsorption agent

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2
Q

What is a well known adsorption agent

A

Charcoal

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3
Q

Chromatography

A

Separation method that uses the diff in adhesion to the stationary phase and solubility in the mobile phase

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4
Q

What is the RF value in gas’s

A

Retention time

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5
Q

RF value

A

Indicates how far a substance is transported by the mobile phase

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6
Q

What is the result of chromatography

A

Chromatogram

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7
Q

Content

A

The content of a substance in a solution is given in grams per liter

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8
Q

Distillation

A

Separation method in which you boil a solution of a solid substance or a mix of liquids

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9
Q

What is the method distillation based on

A

Diff in boiling point

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10
Q

What is the the liquid with the lowest boiling point called

A

Distillate

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11
Q

What is the substance left behind in a distillation flask called

A

Residue

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12
Q

What kind of separation method is evaporation

A

Separate solute from liquid

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13
Q

What method is evaporation based on

A

Diff in boiling point

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14
Q

Extraction

A

Separation method in which part of a mixture dissolves in a solvent and other substances don’t

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15
Q

What method is extraction based on

A

Diff in solubility

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16
Q

What is the extraction agent

A

A liquid used for extraction

17
Q

Filtration

A

Separation method for suspensions a mixture passes though a filter

18
Q

What is the method filtration based on

A

Diff in particle size

19
Q

What is the filtrate

A

That’s whatever passed through the filter

20
Q

What is the residue in filtration

A

Whatever’s stuck on the filter after filtration

21
Q

What is mass percentage

A

Mass of substance in grams pers 100 grams of the mixture

22
Q

Volume percentage

A

Volume of substance in mL per 100mL of the mixture

23
Q

What’s the diff between mass and volume

A

Mass is in grams
Volume is in mL

24
Q

Percentage yield

A

The ratio of actual yield and theoretical yield

25
Q

Formula for percent yield

A

Actual yield
———————- X100%
Theoretical yield

26
Q

What is Sedimentation used for

A

Separate suspensions and emulsions

27
Q

How does sedimentation work

A

Substance with greater density will sink to the bottom

28
Q

What is sedimentation method based on

A

Diff in density

29
Q

What can be used to speed up sedimentation

A

Centrifuge = spiny thing
this is called centrifugation

30
Q

What is the Solubility of a substance

A

Max number of grams that can dissolve in 1L liquid at a certain temp

31
Q

What is a saturated solution

A

Solution containing max amount of a substance

32
Q

What is an unsaturated solution

A

If very little of the substance is dissolved

Chem (2 decks)

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