Separation Techniques

Which separation technique uses the apparatus shown in the diagram?

• filtration

• evaporation

• distillation

• chromatography

Water and alcohol are easily separated by distillation because of their

• different densities
• different boiling points
• different colours
• different melting points

Which of the following pairs of substances may best be separated through through fractional distillation

• sand and soil

• water and soil

• salt and sand

• water and alcohol

Filtration can be used to separate...

• an insoluble solid from a solution
• a soluble solid from a solution
• a dissolved solid from a solution

What is the method suitable to obtain pure water from seawater.

• Simple distillation

• Screening

• Filtration

• Skimming

Which type of separation technique would be used to get nails out of a sandbox so that it will be safe for children to play in?

• screening

• magnetic

Which 2 separation techniques can be used to separate solids from other solids?

• screening

• magnetic

• distillation

• filtration

Which technique would you use to separate dust and pet hair from the air you breathe?

• distillation

• evaporation

• filtration

• magnetic separation

What separation technique does the picture show?

• Screening

• Skimming

• magnetic separation

• Distillation

Iron and copper screws could be separated using a magnet because

• iron is magnetic, copper is not
• copper is magnetic, iron is not
• neither metal is magnetic
• copper screws are heavier than iron and fall off the magnet