Mixture and Solutions

Which tool or technique would best separate a mixture of gravel and sand?

• Sieve

• Paper filter

• Magnet

• Evaporation

Which of the images shows a solution?

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Which tool would best separate a mixture of iron filings and salt?

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A saltwater solution can be easily separated because -

• salt evaporates when boileed, leaving behind the water

• salt can be removed from the solution using tweezers

• water evaporates when boiled, leaving behind the salt

• water passes through a sieve, leaving behind the salt

Which mixture CANNOT be separated by pouring the mixture through a paper filter?

• Mixture 1

• Mixture 2

• Mixture 3

• Mixture 4

Which statement correctly describes this mixture?

• The ingredients in the mixture dissolve to form a solution.

• The ingredients in the mixture maintain their physical properties.

• The mixture includes solutes and a solvent.

• The mixture can be easily separated using evaporation.

Which of the methods would separate a mixture of steel paperclips, and plastic paperclips?

• Methods 1 and 4 only

• Method 4 only

• Methods 1, 3 and 4 only

• Method 2 only

In which mixture do the ingredients not change color?

• Mixture 1

• Mixture 2

• Mixture 3

• Mixture 4

How did the solution most likely appear after more orange powder drink mix was added?

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Tags

NGSS.MS-PS1-2

A student dissolved powdered drink mix in water. The taste wasn't strong or sweet enough, so the student added more powdered drink mix to the solution. Which of the following most likely occurred when more powdered drink mix was added?

• the solution became a solid

• the solution was colder

• the solution had a smaller volume

• the solution had a sweeter taste

Tags

NGSS.MS-PS1-2