Separating mixtures Y9

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

• filter paper

• tissue paper

• toilet paper

• sand paper

A mixture of iron filings and copper filings could best be separated by ...

• adding water, then filtering

• distillation

• magnetic separation

• sieving

In order to dissolve the greatest amount of sugar in a cup of water, you should ...

• use sugar in large pieces, and heat the water

• use sugar crushed into small pieces, and heat the water

• use sugar crushed into small pieces, and cool the water

• use sugar in large pieces, and cool the water

Which of these terms is not used to describe a solid which remains behind during a separation process?

• Filtrate

• Residue

• Sediment

• Gangue

Which physical property of the components in a mixture does distillation exploit?

• Density

• Melting point

• Boiling point

• Viscosity

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

• A = Liebig condenser, B = flask

• A = thermometer, B = funnel

• A = Liebig condenser, B = thermometer

• A = funnel, B = thermometer

The process of evaporating a liquid and then condensing the vapour by cooling it is known as

• filtration

• decanting

• decanting

• distillation

Which one of the following pairs of separation techniques will BOTH separate salt from a mixture of salt and water?

• Chromatography and evaporation

• Chromatography and filtration

• Decanting and distillation

• Distillation and evaporation

Which is the odd one out?

• Ethanol

• Water

• Hexane

• Copper sulphate solution

What colour would the filtrate and the residue be if you filter a mixture of copper sulfate solid and water?

• Filtrate: blue Residue: blue

• Filtrate: blue Residue: white

• Filtrate: colourless Residue: blue

• Filtrate: blue Residue: none