Mixtures & Solutions

Which of the following statements correctly describes the pictures above?

• A is a pure substance and B is a mixture. 
• B is a pure substance and A is a mixture. 
• A and B are both pure substances.
• A and B are both mixtures. 

Most materials in nature are

• mixtures
• solutions
• pure substances
• elements

In a solution, which of the following is present in the largest amount? 

• solute
• solvent
• compound
• element

Which of the following is the most difficult to separate?

• mixture of water and sand
• solution of water and salt
• mixture of sand and iron shavings
• mixture of salt and rice

Which of the following statements is FALSE? 

• A solution can be made up of two or more gasses. 
• A solution can be made up of a solid and a liquid.
• A solution can be made up of a gas and a liquid.
• A solution can only be made with liquids. 

The ____________ of the substances in a mixture will determine how it will be separated. 

• physical properties
• concentration
• pureness
• color

Which beaker shows a saturated solution? 

• Only A is a saturated solution.
• Only B is a saturated solution. 
• Both A and B are saturated solutions. 
• Neither A or B are saturated solutions. 

What vocabulary word describes the red dots in this solution? 

• concentrated molecules
• solute
• solvent
• insoluble

Which solution is the most diluted? 

• A
• B
• C
• A, B, and C are equally diluted. 

How do you know a solution is saturated? 

• It is a darker color. 
• There are solutes gathering at the bottom. 
• The solute and solvent won't evenly mix. 
• It is a lighter color.