Section 8.4 Metallic Bonds and Properties of Metals

Practice Test
      
  1.If tungsten were not available for use in a lightbulb filament, which of the elements in the table would be the best choice for a substitute?

Melting Points and Boiling Points of Some Metals
Element
Melting point (°C)
Boiling point (°C)
Lithium
180
1347
Tin
232
2623
Aluminum
660
2467
Barium
727
1850
Silver
961
2155
Copper
1083
2570


 
  a.   aluminum  
  b.   barium  
  c.   copper  
  d.   lithium  
  Hint    
      
  2.Why are metals described as having a "sea of electrons"?  
  a.   The electrons are wet.  
  b.   The electrons move in waves.  
  c.   The electrons are free to move between the atoms in a metal.  
  d.   The electrons are fixed to a particular metal atom.  
  Hint    
      
  3.Which of the following is a correct description of a metallic property?  
  a.   Metals are brittle.  
  b.   Metals have a dull appearance.  
  c.   Metals gain electrons to form anions.  
  d.   Metals are malleable.  
  Hint    
      
  4.Whichof the following is a mixture of elements that has metallic properties?  
  a.   an alloy  
  b.   a suspension  
  c.   a gas  
  d.   a pure metal  
  Hint    

 
   
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