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Chapter 3: Matter — Properties and Changes

Practice Test
      
  1.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    
      
  2.Seawater is not a substance because __________.  
  a.   it is salty  
  b.   its composition may be different from sample to sample  
  c.   it is a liquid  
  d.   it has hydrogen as part of its composition  
  Hint    
      
  3.Fe2O3 is a(n) _____________.  
  a.   heterogeneous mixture  
  b.   homogeneous mixture  
  c.   compound  
  d.   element  
  Hint    
      
  4.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    
      
  5.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    
      
  6.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    
      
  7.Properties that are dependent on the amount of substance present are ________.  
  a.   intensive properties  
  b.   chemical properties  
  c.   extensive properties  
  d.   external properties  
  Hint    
      
  8.Elements on the left side of the periodic table are _______.  
  a.   metalloids  
  b.   compounds  
  c.   metals  
  d.   nonmetals  
  Hint    
      
  9.Which of the following is a pure substance?  
  a.   soda  
  b.   steam  
  c.   sugar water  
  d.   gun powder  
  Hint    
      
  10.What is the percent by mass of the components of water?  
  a.   33% H, 67% O b.   67% H, 33% O  
  c.   89% H, 11% O d.   11% H, 89% O  
  Hint    
      
  11.How would you read the following chemical reaction?
2Cu + O2 → 2CuO
 
  a.   copper(II) oxide yields oxygen and copper  
  b.   oxygen yields copper and copper(II) oxide  
  c.   copper and oxygen yield copper(II) oxide  
  d.   copper yields oxygen and copper(II) oxide  
  Hint    
      
  12.A characteristic that can be observed or measured without changing the sample’s composition is ________________.  
  a.   a gaseous property  
  b.   chemical property  
  c.   a crystalline property  
  d.   a physical property  
  Hint    
      
  13.Periods are ___________ on the periodic table.  
  a.   horizontal rows  
  b.   vertical columns  
  c.   left to right diagonals  
  d.   right to left diagonals  
  Hint    
      
  14.Which of the following is a compound?  
  a.   crude oil  
  b.   neon  
  c.   water  
  d.   steel  
  Hint    
      
  15.A technique that uses a porous barrier to separate heterogeneous mixtures is _______.  
  a.   filtration  
  b.   distillation  
  c.   crystallization  
  d.   chromatography  
  Hint    
      
  16.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    
      
  17.Matter that has a uniform and unchanging composition is a ___________.  
  a.   substance  
  b.   vapor  
  c.   solid  
  d.   mixture  
  Hint    
      
  18.A vapor is a _________.  
  a.   condensed state  
  b.   gas  
  c.   liquid  
  d.   solid  
  Hint    
      
  19.A solution of solids is a(n)___________.  
  a.   filtration  
  b.   alloy  
  c.   pure metal  
  d.   heterogeneous mixture  
  Hint    
      
  20.What type of property is observed when milk sours?  
  a.   an intensive property  
  b.   a physical property  
  c.   a chemical property  
  d.   an extensive property  
  Hint    

 
   
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