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Chapter 3: Matter Properties and Changes

Practice Test
      
  1.Matter that has a uniform and unchanging composition is a ___________.  
  a.   substance  
  b.   solid  
  c.   vapor  
  d.   mixture  
  Hint    
      
  2.Periods are ___________ on the periodic table.  
  a.   right to left diagonals  
  b.   vertical columns  
  c.   horizontal rows  
  d.   left to right diagonals  
  Hint    
      
  3.How would you read the following chemical reaction?
2Cu + O2 → 2CuO
 
  a.   copper yields oxygen and copper(II) oxide  
  b.   oxygen yields copper and copper(II) oxide  
  c.   copper and oxygen yield copper(II) oxide  
  d.   copper(II) oxide yields oxygen and copper  
  Hint    
      
  4.Fe2O3 is a(n) _____________.  
  a.   compound  
  b.   heterogeneous mixture  
  c.   homogeneous mixture  
  d.   element  
  Hint    
      
  5.Which of the following is a pure substance?  
  a.   steam  
  b.   soda  
  c.   sugar water  
  d.   gun powder  
  Hint    
      
  6.A material that cannot be broken down further by chemical means is a(n) ________.  
  a.   element  
  b.   substance  
  c.   compound  
  d.   mixture  
  Hint    
      
  7.A form of matter that has a fixed shape and occupies a fixed volume is a _________.  
  a.   liquid  
  b.   plasma  
  c.   gas  
  d.   solid  
  Hint    
      
  8.What is the percent by mass of the components of water?  
  a.   33% H, 67% O b.   89% H, 11% O  
  c.   67% H, 33% O d.   11% H, 89% O  
  Hint    
      
  9.Which of the following is not a chemical property?  
  a.   burning a piece of wood  
  b.   freezing of water  
  c.   placing iron in hydrochloric acid and producing hydrogen gas  
  d.   rusting of iron  
  Hint    
      
  10.Properties that are dependent on the amount of substance present are ________.  
  a.   intensive properties  
  b.   chemical properties  
  c.   external properties  
  d.   extensive properties  
  Hint    
      
  11.A vapor is a _________.  
  a.   gas  
  b.   condensed state  
  c.   solid  
  d.   liquid  
  Hint    
      
  12.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    
      
  13.Which of the following is a heterogeneous mixture?  
  a.   sugar  
  b.   samples of argon and iron in the same container  
  c.   samples of nitrogen and oxygen in the same container  
  d.   sugar in water  
  Hint    
      
  14.In the following chemical reaction, how do you classify hydrogen and oxygen?
2H2 + O22H2O
 
  a.   products  
  b.   reactants  
  c.   chemical properties  
  d.   physical changes  
  Hint    
      
  15.Which of the following is not a state of matter?  
  a.   liquid  
  b.   gas  
  c.   solid  
  d.   density  
  Hint    
      
  16.What type of property is observed when milk sours?  
  a.   an extensive property  
  b.   an intensive property  
  c.   a chemical property  
  d.   a physical property  
  Hint    
      
  17.A technique that uses the differences in boiling point to separate homogeneous mixtures is _________.  
  a.   distillation  
  b.   filtration  
  c.   crystallization  
  d.   chromatography  
  Hint    
      
  18.When one substance changes identity, it exhibits a(n) __________.  
  a.   physical property  
  b.   extensive property  
  c.   intensive property  
  d.   chemical property  
  Hint    
      
  19.A technique that uses a porous barrier to separate heterogeneous mixtures is _______.  
  a.   chromatography  
  b.   distillation  
  c.   crystallization  
  d.   filtration  
  Hint    
      
  20.Elements on the left side of the periodic table are _______.  
  a.   nonmetals  
  b.   metals  
  c.   metalloids  
  d.   compounds  
  Hint    

 
   
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