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Chapter 3: Matter — Properties and Changes

Practice Test
      
  1.When one substance changes identity, it exhibits a(n) __________.  
  a.   physical property  
  b.   chemical property  
  c.   extensive property  
  d.   intensive property  
  Hint    
      
  2.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    
      
  3.How can you tell when the following reaction is balanced?
2Cu + O2 → 2CuO
 
  a.   volume of reactants = volume of products  
  b.   mass of reactants = volume of products  
  c.   mass of the reactants = mass of products  
  d.   volume of reactants = mass of products  
  Hint    
      
  4.Which of the following is a compound?  
  a.   neon  
  b.   water  
  c.   crude oil  
  d.   steel  
  Hint    
      
  5.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    
      
  6.In the following chemical reaction, how do you classify hydrogen and oxygen?
2H2 + O22H2O
 
  a.   physical changes  
  b.   reactants  
  c.   products  
  d.   chemical properties  
  Hint    
      
  7.Which of the following is not a chemical property?  
  a.   placing iron in hydrochloric acid and producing hydrogen gas  
  b.   freezing of water  
  c.   rusting of iron  
  d.   burning a piece of wood  
  Hint    
      
  8.Elements on the left side of the periodic table are _______.  
  a.   nonmetals  
  b.   metals  
  c.   metalloids  
  d.   compounds  
  Hint    
      
  9.Periods are ___________ on the periodic table.  
  a.   left to right diagonals  
  b.   vertical columns  
  c.   right to left diagonals  
  d.   horizontal rows  
  Hint    
      
  10.Which of the following is not a state of matter?  
  a.   density  
  b.   liquid  
  c.   solid  
  d.   gas  
  Hint    
      
  11.A technique that uses the differences in boiling point to separate homogeneous mixtures is _________.  
  a.   distillation  
  b.   filtration  
  c.   chromatography  
  d.   crystallization  
  Hint    
      
  12.A technique that uses a porous barrier to separate heterogeneous mixtures is _______.  
  a.   filtration  
  b.   chromatography  
  c.   distillation  
  d.   crystallization  
  Hint    
      
  13.A solution of solids is a(n)___________.  
  a.   pure metal  
  b.   heterogeneous mixture  
  c.   filtration  
  d.   alloy  
  Hint    
      
  14.A characteristic that can be observed or measured without changing the sample’s composition is ________________.  
  a.   a physical property  
  b.   chemical property  
  c.   a gaseous property  
  d.   a crystalline property  
  Hint    
      
  15.What type of property is observed when milk sours?  
  a.   a chemical property  
  b.   an extensive property  
  c.   an intensive property  
  d.   a physical property  
  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.Fe2O3 is a(n) _____________.  
  a.   heterogeneous mixture  
  b.   homogeneous mixture  
  c.   element  
  d.   compound  
  Hint    
      
  18.A material that cannot be broken down further by chemical means is a(n) ________.  
  a.   mixture  
  b.   element  
  c.   compound  
  d.   substance  
  Hint    
      
  19.Matter that has a uniform and unchanging composition is a ___________.  
  a.   substance  
  b.   mixture  
  c.   solid  
  d.   vapor  
  Hint    
      
  20.Which of the following is a heterogeneous mixture?  
  a.   sugar  
  b.   samples of nitrogen and oxygen in the same container  
  c.   sugar in water  
  d.   samples of argon and iron in the same container  
  Hint    

 
   
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