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Chapter 3: Matter Properties and Changes

Practice Test
      
  1.A material that cannot be broken down further by chemical means is a(n) ________.  
  a.   substance  
  b.   mixture  
  c.   compound  
  d.   element  
  Hint    
      
  2.When one substance changes identity, it exhibits a(n) __________.  
  a.   intensive property  
  b.   chemical property  
  c.   extensive property  
  d.   physical property  
  Hint    
      
  3.What is the percent by mass of the components of water?  
  a.   67% H, 33% O b.   33% H, 67% O  
  c.   11% H, 89% O d.   89% H, 11% O  
  Hint    
      
  4.A solution of solids is a(n)___________.  
  a.   pure metal  
  b.   heterogeneous mixture  
  c.   filtration  
  d.   alloy  
  Hint    
      
  5.Seawater is not a substance because __________.  
  a.   its composition may be different from sample to sample  
  b.   it has hydrogen as part of its composition  
  c.   it is a liquid  
  d.   it is salty  
  Hint    
      
  6.A technique that uses the differences in boiling point to separate homogeneous mixtures is _________.  
  a.   distillation  
  b.   chromatography  
  c.   filtration  
  d.   crystallization  
  Hint    
      
  7.A vapor is a _________.  
  a.   gas  
  b.   solid  
  c.   condensed state  
  d.   liquid  
  Hint    
      
  8.Periods are ___________ on the periodic table.  
  a.   left to right diagonals  
  b.   vertical columns  
  c.   right to left diagonals  
  d.   horizontal rows  
  Hint    
      
  9.A technique that uses a porous barrier to separate heterogeneous mixtures is _______.  
  a.   filtration  
  b.   distillation  
  c.   crystallization  
  d.   chromatography  
  Hint    
      
  10.Which of the following is a pure substance?  
  a.   steam  
  b.   gun powder  
  c.   soda  
  d.   sugar water  
  Hint    
      
  11.Which of the following is a heterogeneous mixture?  
  a.   sugar in water  
  b.   samples of nitrogen and oxygen in the same container  
  c.   samples of argon and iron in the same container  
  d.   sugar  
  Hint    
      
  12.What type of property is observed when milk sours?  
  a.   a physical property  
  b.   a chemical property  
  c.   an extensive property  
  d.   an intensive property  
  Hint    
      
  13.Fe2O3 is a(n) _____________.  
  a.   element  
  b.   homogeneous mixture  
  c.   heterogeneous mixture  
  d.   compound  
  Hint    
      
  14.How can you tell when the following reaction is balanced?
2Cu + O2 → 2CuO
 
  a.   volume of reactants = mass of products  
  b.   mass of reactants = volume of products  
  c.   mass of the reactants = mass of products  
  d.   volume of reactants = volume of products  
  Hint    
      
  15.Which of the following is not a chemical property?  
  a.   rusting of iron  
  b.   freezing of water  
  c.   burning a piece of wood  
  d.   placing iron in hydrochloric acid and producing hydrogen gas  
  Hint    
      
  16.Which of the following is not a state of matter?  
  a.   density  
  b.   solid  
  c.   gas  
  d.   liquid  
  Hint    
      
  17.Elements on the left side of the periodic table are _______.  
  a.   nonmetals  
  b.   compounds  
  c.   metals  
  d.   metalloids  
  Hint    
      
  18.A form of matter that has a fixed shape and occupies a fixed volume is a _________.  
  a.   liquid  
  b.   gas  
  c.   plasma  
  d.   solid  
  Hint    
      
  19.Matter that has a uniform and unchanging composition is a ___________.  
  a.   vapor  
  b.   solid  
  c.   mixture  
  d.   substance  
  Hint    
      
  20.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    

 
   
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