Methods of Separating Mixtures

Which of the following best describes chromatography?

• A solid is stirred in a liquid to make the solid float to the top.

• A solution is heated until all the liquid turns to gas to leave a solid behind.

• A solvent moves solutes up a paper based on how well the solute dissolves in the solvent.

• A mixture of solids is put in a container that allows small particles to leave the container.

What method of separation would work best to separate sugar and rock pebbles?

• filtration

• sifting

• evaporation

• magnetic attraction

What method of separation would work best to separate water and salt?

• filtration

• sifting

• evaporation

• magnetic attraction

Which method would be the best to separate styrofoam mixed with small stones?

• chromatography

• filtration

• flotation

• magnetic attraction

Explain the process of filtration as a method of separation.

• The process of filtration involves passing a mixture through a filter medium to separate solid particles from the liquid component.

• Filtration is used to combine solid and liquid components

• Filtration is a process of mixing two substances together

• Filtration involves heating a mixture to separate components

The method used to separate chaff from the grain by wind or blowing air is called

• winnowing

• decantation

• sedimentation

• saturated solution

Which of of these mixtures could be separated by filtration?

• sugar and milk

• sand and water

• milk and water

• sugar and water

I used evaporation to separate a salt water mixture. What could I use to measure the salt after separation?

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What mixture could I use this type of tool to separate?

• oil and water

• sugar and sand

• salt and corn flour

• pebbles and baby powder

You want to see what colors are all present in a solution. What method would you use?

• chromatography

• flotation

• mangetism

• sifting