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Chapter 3: Matter — Properties and Changes

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

 
   
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