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Chapter 3: Matter — Properties and Changes

Practice Test
      
  1.What type of property is observed when milk sours?  
  a.   an extensive property  
  b.   an intensive property  
  c.   a physical property  
  d.   a chemical property  
  Hint    
      
  2.A material that cannot be broken down further by chemical means is a(n) ________.  
  a.   element  
  b.   compound  
  c.   mixture  
  d.   substance  
  Hint    
      
  3.What is the percent by mass of the components of water?  
  a.   11% H, 89% O b.   67% H, 33% O  
  c.   33% H, 67% O d.   89% H, 11% O  
  Hint    
      
  4.A characteristic that can be observed or measured without changing the sample’s composition is ________________.  
  a.   a gaseous property  
  b.   a crystalline property  
  c.   a physical property  
  d.   chemical property  
  Hint    
      
  5.Properties that are dependent on the amount of substance present are ________.  
  a.   chemical properties  
  b.   external properties  
  c.   extensive properties  
  d.   intensive properties  
  Hint    
      
  6.The statement, “Mass can neither be created nor destroyed” is the ____________.  
  a.   law of conservation of energy  
  b.   law of gravity  
  c.   law of conservation of mass  
  d.   law of multiple proportions  
  Hint    
      
  7.Matter that has a uniform and unchanging composition is a ___________.  
  a.   substance  
  b.   vapor  
  c.   mixture  
  d.   solid  
  Hint    
      
  8.Which of the following is a heterogeneous mixture?  
  a.   sugar in water  
  b.   samples of argon and iron in the same container  
  c.   sugar  
  d.   samples of nitrogen and oxygen in the same container  
  Hint    
      
  9.Periods are ___________ on the periodic table.  
  a.   horizontal rows  
  b.   left to right diagonals  
  c.   vertical columns  
  d.   right to left diagonals  
  Hint    
      
  10.A form of matter that has a fixed shape and occupies a fixed volume is a _________.  
  a.   solid  
  b.   liquid  
  c.   plasma  
  d.   gas  
  Hint    
      
  11.Which of the following is a pure substance?  
  a.   gun powder  
  b.   sugar water  
  c.   soda  
  d.   steam  
  Hint    
      
  12.A vapor is a _________.  
  a.   solid  
  b.   liquid  
  c.   condensed state  
  d.   gas  
  Hint    
      
  13.When one substance changes identity, it exhibits a(n) __________.  
  a.   physical property  
  b.   chemical property  
  c.   extensive property  
  d.   intensive property  
  Hint    
      
  14.A technique that uses a porous barrier to separate heterogeneous mixtures is _______.  
  a.   filtration  
  b.   chromatography  
  c.   crystallization  
  d.   distillation  
  Hint    
      
  15.A technique that uses the differences in boiling point to separate homogeneous mixtures is _________.  
  a.   crystallization  
  b.   filtration  
  c.   chromatography  
  d.   distillation  
  Hint    
      
  16.Which of the following is not a state of matter?  
  a.   liquid  
  b.   solid  
  c.   gas  
  d.   density  
  Hint    
      
  17.In the following chemical reaction, how do you classify hydrogen and oxygen?
2H2 + O22H2O
 
  a.   chemical properties  
  b.   physical changes  
  c.   reactants  
  d.   products  
  Hint    
      
  18.Which of the following is a compound?  
  a.   crude oil  
  b.   steel  
  c.   water  
  d.   neon  
  Hint    
      
  19.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.   mass of the reactants = mass of products  
  d.   volume of reactants = volume of products  
  Hint    
      
  20.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    

 
   
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