Solution and Mixture Benchmark

Which one of the following statements is true about mixtures & solutions?

• Solutions aren't a type of mixture

• Solutions & mixtures are both easy to separate

• Solutions are a type of mixture

• Solutions & mixtures are both hard or impossible to separate

In a solution one or more substances _________ , or spreads out evenly, into another substance.

• evaporates

• dissolves

• won't mix

• disappears

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

• True

• False

How would you separate a mixture of salt & water?

• You can't because it's impossible

• Pour the mixture through a hand strainer to separate the salt from the water

• Heat the mixture for 5 minutes, let it cool, & the salt will float to the top

• Stir together until the salt dissolves into the water, place it on a heating source, & let the water evaporate until the salt is left behind

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Look at the recipe cards below. Select ALL cards listing ingredients that are easy to separate.

Also answer if your selections are regular mixtures or solutions.

• 
• 
• 
• My selections are regular mixtures

• My selections are solutions

Which of the following is a combination of substances where the substances keep their original physical properties?

• Solution

• Mixture

What tool below worked best to remove the paper clips from your ocean last week?

• 
• 
• 
• 

Ocean water is a solution.

• True

• False

Select ALL of the choices that list what happens when a solution is created.

• A new substance is formed when the materials are combined

• None of the combined materials dissolve into one another

• The physical properties of the materials change when combined

• It is hard or impossible to separate the materials once they're combined

Tags

NGSS.MS-PS1-2

Which of the following is NOT just a regular mixture?

• Crayons, pencils, and markers stored in one box

• Trail mix made with fruit snacks, chocolate chips, and

  pretzels

• Eggs cooked in a pan with salt, pepper, and milk

• Rocks and sand stirred around in a bucket