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Chapter 3: Matter — Properties and Changes

Practice Test
      
  1.What type of property is observed when milk sours?  
  a.   a chemical property  
  b.   an extensive property  
  c.   a physical property  
  d.   an intensive property  
  Hint    
      
  2.When one substance changes identity, it exhibits a(n) __________.  
  a.   physical property  
  b.   intensive property  
  c.   chemical property  
  d.   extensive property  
  Hint    
      
  3.Matter that has a uniform and unchanging composition is a ___________.  
  a.   substance  
  b.   mixture  
  c.   solid  
  d.   vapor  
  Hint    
      
  4.Elements on the left side of the periodic table are _______.  
  a.   compounds  
  b.   nonmetals  
  c.   metalloids  
  d.   metals  
  Hint    
      
  5.Fe2O3 is a(n) _____________.  
  a.   element  
  b.   compound  
  c.   heterogeneous mixture  
  d.   homogeneous mixture  
  Hint    
      
  6.A solution of solids is a(n)___________.  
  a.   filtration  
  b.   pure metal  
  c.   alloy  
  d.   heterogeneous mixture  
  Hint    
      
  7.A material that cannot be broken down further by chemical means is a(n) ________.  
  a.   substance  
  b.   mixture  
  c.   element  
  d.   compound  
  Hint    
      
  8.How would you read the following chemical reaction?
2Cu + O2 → 2CuO
 
  a.   oxygen yields copper and copper(II) oxide  
  b.   copper yields oxygen and copper(II) oxide  
  c.   copper(II) oxide yields oxygen and copper  
  d.   copper and oxygen yield copper(II) oxide  
  Hint    
      
  9.How can you tell when the following reaction is balanced?
2Cu + O2 → 2CuO
 
  a.   mass of reactants = volume of products  
  b.   volume of reactants = mass of products  
  c.   volume of reactants = volume of products  
  d.   mass of the reactants = mass of products  
  Hint    
      
  10.In the following chemical reaction, how do you classify hydrogen and oxygen?
2H2 + O22H2O
 
  a.   products  
  b.   physical changes  
  c.   chemical properties  
  d.   reactants  
  Hint    
      
  11.A characteristic that can be observed or measured without changing the sample’s composition is ________________.  
  a.   chemical property  
  b.   a gaseous property  
  c.   a crystalline property  
  d.   a physical property  
  Hint    
      
  12.A vapor is a _________.  
  a.   solid  
  b.   liquid  
  c.   condensed state  
  d.   gas  
  Hint    
      
  13.Which of the following is a compound?  
  a.   water  
  b.   crude oil  
  c.   neon  
  d.   steel  
  Hint    
      
  14.Periods are ___________ on the periodic table.  
  a.   right to left diagonals  
  b.   horizontal rows  
  c.   vertical columns  
  d.   left to right diagonals  
  Hint    
      
  15.Which of the following is not a state of matter?  
  a.   density  
  b.   liquid  
  c.   solid  
  d.   gas  
  Hint    
      
  16.Seawater is not a substance because __________.  
  a.   it is a liquid  
  b.   its composition may be different from sample to sample  
  c.   it has hydrogen as part of its composition  
  d.   it is salty  
  Hint    
      
  17.Which of the following is a pure substance?  
  a.   sugar water  
  b.   soda  
  c.   steam  
  d.   gun powder  
  Hint    
      
  18.Which of the following is a heterogeneous mixture?  
  a.   sugar in water  
  b.   samples of nitrogen and oxygen in the same container  
  c.   sugar  
  d.   samples of argon and iron in the same container  
  Hint    
      
  19.Properties that are dependent on the amount of substance present are ________.  
  a.   intensive properties  
  b.   external properties  
  c.   chemical properties  
  d.   extensive properties  
  Hint    
      
  20.A form of matter that has a fixed shape and occupies a fixed volume is a _________.  
  a.   plasma  
  b.   liquid  
  c.   solid  
  d.   gas  
  Hint    

 
   
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