Separation Techniques

1.

Multiple Choice

30 sec

1 pt

What method would you use to separate a mixture of salt and water so that you can get keep the salt AND the water?

sorting by hand

distillation

chromatography

2.

Multiple Choice

30 sec

1 pt

In the distillation apparatus shown, what are the parts labelled A and B?

A = funnel, B = thermometer

A = thermometer, B = funnel

A = condenser, B = flask

A = condenser, B = thermometer

3.

Multiple Choice

30 sec

1 pt

Dyes in a felt-tip pen may be separated by....

Distillation

Decanting

Chromatography

Centrifuge

4.

Multiple Choice

30 sec

1 pt

The diagram shows the apparatus for separating soil and water. What are the labelled parts?

A = distillate, B = filtrate

A = filtrate, B = residue

A = residue, B = filtrate

A = residue, B = distillate

5.

Multiple Choice

30 sec

1 pt

Which one of the following is the name for separation technique in the picture below

distillation

dissolving

evaporation

decanting

6.

Multiple Choice

30 sec

1 pt

Which one of the following is a disadvantage of evaporation?

It always requires heat

It cannot be used for insoluble solids

All of the solute is recovered

The solvent (liquid part) is not recovered

7.

Multiple Choice

30 sec

1 pt

No matter what you do, sand will not dissolve in water, because sand is _________.

dissolved

soluble

insoluble

aqueous

8.

Multiple Choice

30 sec

1 pt

What is the name of this separation technique?

Simple distillation

Fractional distillation

Boiling

Evaporation

9.

Multiple Choice

30 sec

1 pt

Which separation technique is used to obtain pure water from seawater?

Simple distillation

Filtration

Chromatography

Evaporation

10.

Multiple Choice

30 sec

1 pt

What is the name of this separation technique?

distillation

filtration

evaporation

chromatography

11.

Multiple Choice

45 sec

1 pt

Which ink is most soluble?

Blue

Red

Yellow

Green

12.

Multiple Choice

45 sec

1 pt

Which ink is a mixture?

Blue

Red

Yellow

Black

13.

Multiple Choice

45 sec

1 pt

Referring to the chromatogram, black ink contains

Blue, red and yellow ink only

Blue, red, yellow and green ink

Blue and yellow ink

Black ink only

14.

Multiple Choice

30 sec

1 pt

Which of the following statements tells us that a sample of liquid is pure water?

It is colourless.

It leaves no residue when filtered.

It boils at 100^oC.

It is odourless.

15.

Multiple Choice

30 sec

1 pt

For paper chromatography to work,

the dyes must have different boiling points.

the dyes must have different solubilities in the solvent.

the starting line on the chromatogram must be drawn using pen.

The starting line must be below the level of the solvent.

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