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Chapter 3: Matter — Properties and Changes

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

 
   
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