Separating Mixtures

Sand and gravel may be separated from each other through using..

• a filter funnel
• a sieve
• an evaporating basin
• a distillation

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

•  sand and soil
• water and soil
• salt and sand
•  water and alcohol

Which one of the following techniques would best be used to separate soil and water?

• Decanting
• distillation
• Filtration
• Chromatography

Name the separation technique shown in the diagram.

• evaporation
• distillation
•  filtration
• decanting

Sodium chloride can be separated from rock salt by first adding water to the mixture to dissolve the sodium chloride. The separation then takes place in two stages:

• evaporation followed by filtration
•  distillation followed by decanting
• filtration followed by evaporation
• filtration followed by decanting

Two or more substances mingled together, but not chemically combined are known as a

• residue
• solution
• distillate
• mixture

The separation technique that involves heating a solution until the liquid changes into a gaseous state, leaving behind a solid is known as

• decanting
•  evaporation
• loading
• chromatography

In a coffee machine, the ground coffee is separated from the coffee solution by using..

• sand paper
•  filter paper
• toilet paper
•  tissue paper

Which one of the following would you use to separate sand from iron filings?

• a bar magnet
• filter paper
• chromatography paper
• alum

Water and alcohol are easily separated by distillation because of their

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