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Chapter 3: Matter — Properties and Changes

Practice Test
      
  1.A solution of solids is a(n)___________.  
  a.   filtration  
  b.   heterogeneous mixture  
  c.   pure metal  
  d.   alloy  
  Hint    
      
  2.Periods are ___________ on the periodic table.  
  a.   left to right diagonals  
  b.   right to left diagonals  
  c.   vertical columns  
  d.   horizontal rows  
  Hint    
      
  3.In the following chemical reaction, how do you classify hydrogen and oxygen?
2H2 + O22H2O
 
  a.   reactants  
  b.   chemical properties  
  c.   products  
  d.   physical changes  
  Hint    
      
  4.Which of the following is not a state of matter?  
  a.   solid  
  b.   gas  
  c.   liquid  
  d.   density  
  Hint    
      
  5.The statement, “Mass can neither be created nor destroyed” is the ____________.  
  a.   law of conservation of energy  
  b.   law of multiple proportions  
  c.   law of gravity  
  d.   law of conservation of mass  
  Hint    
      
  6.Matter that has a uniform and unchanging composition is a ___________.  
  a.   substance  
  b.   solid  
  c.   mixture  
  d.   vapor  
  Hint    
      
  7.Which of the following is not a chemical property?  
  a.   burning a piece of wood  
  b.   freezing of water  
  c.   rusting of iron  
  d.   placing iron in hydrochloric acid and producing hydrogen gas  
  Hint    
      
  8.Elements on the left side of the periodic table are _______.  
  a.   compounds  
  b.   nonmetals  
  c.   metalloids  
  d.   metals  
  Hint    
      
  9.A technique that uses a porous barrier to separate heterogeneous mixtures is _______.  
  a.   distillation  
  b.   filtration  
  c.   chromatography  
  d.   crystallization  
  Hint    
      
  10.A vapor is a _________.  
  a.   condensed state  
  b.   solid  
  c.   liquid  
  d.   gas  
  Hint    
      
  11.A characteristic that can be observed or measured without changing the sample’s composition is ________________.  
  a.   a physical property  
  b.   a crystalline property  
  c.   a gaseous property  
  d.   chemical property  
  Hint    
      
  12.Which of the following is a heterogeneous mixture?  
  a.   sugar  
  b.   sugar in water  
  c.   samples of argon and iron in the same container  
  d.   samples of nitrogen and oxygen in the same container  
  Hint    
      
  13.Which of the following is a compound?  
  a.   water  
  b.   crude oil  
  c.   steel  
  d.   neon  
  Hint    
      
  14.When one substance changes identity, it exhibits a(n) __________.  
  a.   extensive property  
  b.   intensive property  
  c.   chemical property  
  d.   physical property  
  Hint    
      
  15.Seawater is not a substance because __________.  
  a.   it is a liquid  
  b.   it is salty  
  c.   it has hydrogen as part of its composition  
  d.   its composition may be different from sample to sample  
  Hint    
      
  16.How can you tell when the following reaction is balanced?
2Cu + O2 → 2CuO
 
  a.   mass of the reactants = mass of products  
  b.   volume of reactants = mass of products  
  c.   volume of reactants = volume of products  
  d.   mass of reactants = volume of products  
  Hint    
      
  17.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    
      
  18.A form of matter that has a fixed shape and occupies a fixed volume is a _________.  
  a.   solid  
  b.   plasma  
  c.   gas  
  d.   liquid  
  Hint    
      
  19.How would you read the following chemical reaction?
2Cu + O2 → 2CuO
 
  a.   copper(II) oxide yields oxygen and copper  
  b.   copper yields oxygen and copper(II) oxide  
  c.   copper and oxygen yield copper(II) oxide  
  d.   oxygen yields copper and copper(II) oxide  
  Hint    
      
  20.Which of the following is a pure substance?  
  a.   gun powder  
  b.   sugar water  
  c.   steam  
  d.   soda  
  Hint    

 
   
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