Mixtures and Solutions

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

• a bar magnet

• filter paper

• hot plate

• strainer

If I added 27 grams of salt to water and separated the solution with a hot plate, what amount of salt would be left behind?

• 20 grams
• 0 grams
• 27 grams
• 10 grams

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A solution is a mixture of one or more substances _________ evenly into another substance.

• dissolved
• evaporated
• carried
• split

A mixture is always a solution, but a solution is NOT always a mixture. 

• True
• False

How would you separate a mixture of sand and salt? 

• Mix them with water and let the water evaporate
• Mix them with water, pour the mixture through a sieve, then let the water evaporate
• Heat the sand and salt mixture for 5 minutes, then let it cool
• I would not do any of these because none of these options would work

Which of the following is NOT a mixture?

• sand, salt, and rocks in a bucket
• trail mix made with dried fruit,
  nuts, chocolate drops, and
  pretzels
• water in a glass
• rocks and sand in the ocean

Salt dissolves in water like ----

• Pepper dissolves in water
• Sugar dissolves in water
• Rocks dissolve in water
• Seeds dissolve in water

A _____________________ is a type a mixture where the substances are evenly distributed throughout the mixture.

• solution
• solvent
• solute
• mixture

A Mixture is a combination of substances where the original substances keep their original properties

• True

• False

A solution is a special mixture formed when one substance is _____________evenly throughout the other.

• Dissolved

• Disappearing

• Spread Out

• Put