4. Separation techniques LSS Sec 1

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

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

• Distillation

• Decanting

• Chromatography

• Centrifuge

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

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

• distillation
• dissolving
• evaporation
• decanting

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

What is the name of this separation technique?

• Simple distillation

• Fractional distillation

• Boiling

• Evaporation

Which ink is most soluble?

• Blue

• Red

• Yellow

• Green

Which ink is a mixture?

• Blue

• Red

• Yellow

• Black

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

How can we separate an insoluble solid from a liquid?

• chromatography

• evaporation

• filtration

• condensation