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Chapter 3: Matter — Properties and Changes

Practice Test
      
  1.What type of property is observed when milk sours?  
  a.   a chemical property  
  b.   an extensive property  
  c.   a physical property  
  d.   an intensive property  
  Hint    
      
  2.Properties that are dependent on the amount of substance present are ________.  
  a.   extensive properties  
  b.   chemical properties  
  c.   external properties  
  d.   intensive properties  
  Hint    
      
  3.Which of the following is not a state of matter?  
  a.   solid  
  b.   liquid  
  c.   gas  
  d.   density  
  Hint    
      
  4.A material that cannot be broken down further by chemical means is a(n) ________.  
  a.   compound  
  b.   element  
  c.   mixture  
  d.   substance  
  Hint    
      
  5.A solution of solids is a(n)___________.  
  a.   alloy  
  b.   filtration  
  c.   pure metal  
  d.   heterogeneous mixture  
  Hint    
      
  6.Elements on the left side of the periodic table are _______.  
  a.   compounds  
  b.   nonmetals  
  c.   metals  
  d.   metalloids  
  Hint    
      
  7.Which of the following is a compound?  
  a.   crude oil  
  b.   water  
  c.   steel  
  d.   neon  
  Hint    
      
  8.A form of matter that has a fixed shape and occupies a fixed volume is a _________.  
  a.   plasma  
  b.   solid  
  c.   liquid  
  d.   gas  
  Hint    
      
  9.A technique that uses a porous barrier to separate heterogeneous mixtures is _______.  
  a.   filtration  
  b.   distillation  
  c.   chromatography  
  d.   crystallization  
  Hint    
      
  10.What is the percent by mass of the components of water?  
  a.   11% H, 89% O b.   33% H, 67% O  
  c.   89% H, 11% O d.   67% H, 33% 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 yields oxygen and copper(II) oxide  
  d.   copper and oxygen yield copper(II) oxide  
  Hint    
      
  12.How can you tell when the following reaction is balanced?
2Cu + O2 → 2CuO
 
  a.   volume of reactants = volume of products  
  b.   mass of the reactants = mass of products  
  c.   volume of reactants = mass of products  
  d.   mass of reactants = volume of products  
  Hint    
      
  13.Matter that has a uniform and unchanging composition is a ___________.  
  a.   substance  
  b.   vapor  
  c.   solid  
  d.   mixture  
  Hint    
      
  14.In the following chemical reaction, how do you classify hydrogen and oxygen?
2H2 + O22H2O
 
  a.   chemical properties  
  b.   products  
  c.   physical changes  
  d.   reactants  
  Hint    
      
  15.When one substance changes identity, it exhibits a(n) __________.  
  a.   intensive property  
  b.   physical property  
  c.   chemical property  
  d.   extensive property  
  Hint    
      
  16.Which of the following is not a chemical property?  
  a.   freezing of water  
  b.   rusting of iron  
  c.   burning a piece of wood  
  d.   placing iron in hydrochloric acid and producing hydrogen gas  
  Hint    
      
  17.A vapor is a _________.  
  a.   liquid  
  b.   solid  
  c.   gas  
  d.   condensed state  
  Hint    
      
  18.The statement, “Mass can neither be created nor destroyed” is the ____________.  
  a.   law of multiple proportions  
  b.   law of conservation of energy  
  c.   law of conservation of mass  
  d.   law of gravity  
  Hint    
      
  19.Fe2O3 is a(n) _____________.  
  a.   homogeneous mixture  
  b.   compound  
  c.   heterogeneous mixture  
  d.   element  
  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 is salty  
  d.   it has hydrogen as part of its composition  
  Hint    

 
   
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