Mixtures of Matter

Which of the following is an example of a mixture?

• hydrogen peroxide 

  
  

• rust 

  
  

• air 

  
  

• table salt 

  
  

What is true of a mixture?

• It can only be separated by chemical means.

  
  

• It may be a solution.

  
  

• It may be heterogeneous but not homogenous.

  
  

• It may be homogeneous but not heterogeneous.

  
  

An alloy is which of the following?

• solid-solid solution 

  
  

• heterogeneous mixture

  
  

• homogeneous mixture but not a solution 

  
  

• compound 

  
  

Which of the following is not a solution?

• gasoline

  
  

• steel

  
  

• baking soda

  
  

• lemonade

  
  

Ink is often a mixture of several dyes. The dyes can be separated because they spread through paper at different rates. What method could be used to separate the dyes in the mixture?

• distillation 

  
  

• crystallization 

  
  

• chromatography 

  
  

• sublimation