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Chemical Bonds

Practice Test
      
  1.The iodine ion I- carries what type of charge?  
  a.   negative  
  b.   neutral  
  c.   positive  
  d.   both  
  Hint    
      
  2.What kind of charge does an ionic compound carry?  
  a.   neutral  
  b.   unknown  
  c.   positive  
  d.   negative  
  Hint    
      
  3.Binary compounds are composed of __________ atoms.  
  a.   two  
  b.   many  
  c.   one  
  d.   four  
  Hint    
      
  4.In a covalent bond, electrons are __________.  
  a.   shared  
  b.   destroyed  
  c.   gained  
  d.   lost  
  Hint    
      
  5.What is the difference between carbon monoxide and carbon dioxide?  
  a.   Carbon monoxide has two carbon atoms.  
  b.   Carbon dioxide has only one oxygen atom.  
  c.   Carbon monoxide has only one oxygen atom.  
  d.   Carbon dioxide has two carbon atoms.  
  Hint    
      
  6.Compounds that are hydrates contain what ingredient?  
  a.   hydrogen chloride  
  b.   nitrogen  
  c.   water  
  d.   chlorine  
  Hint    
      
  7.A polyatomic ion is another name for a __________ ion.  
  a.   negative  
  b.   complex  
  c.   neutral  
  d.   positive  
  Hint    
      
  8.When an atom's outer energy levels are not filled completely, the atom __________.  
  a.   is very stable  
  b.   is a noble gas  
  c.   can gain, lose, or share electrons  
  d.   cannot form a compound  
  Hint    
      
  9.When elements form bonds, it changes their __________ properties.  
  a.   mass  
  b.   chemical and physical  
  c.   chemical  
  d.   physical  
  Hint    
      
  10.Is a molecule of hydrogen chloride (HCl) polar or nonpolar?  
  a.   polar  
  b.   neither  
  c.   nonpolar  
  d.   both  
  Hint    
      
  11.Why is potassium iodine added to table salt?  
  a.   Iodine is in the formula for table salt.  
  b.   Iodine is an element essential for health.  
  c.   Table salt causes high blood pressure.  
  d.   to add to the flavor of salt  
  Hint    
      
  12.In general, noble gases react with __________.  
  a.   other noble gases  
  b.   nothing  
  c.   water  
  d.   metals  
  Hint    
      
  13.For an ion, the oxidation number is __________.  
  a.   zero  
  b.   the same as the charge on the ion  
  c.   one less than the charge on the ion  
  d.   always negative  
  Hint    
      
  14.Francium, which is in the same chemical family as sodium, will carry what type of charge?  
  a.   positive  
  b.   both  
  c.   neutral  
  d.   negative  
  Hint    
      
  15.A complex ion is __________.  
  a.   a single atom that has formed an ion  
  b.   an ion with more than one atom  
  c.   only found in compounds  
  d.   an ion made from a large atom  
  Hint    
      
  16.A binary compound made with phosphorus will end with the word __________.  
  a.   phosphite  
  b.   phosphide  
  c.   phosphate  
  d.   phosphorus  
  Hint    
      
  17.NaCl is the chemical formula for what?  
  a.   water  
  b.   sodium chloride  
  c.   chlorine gas  
  d.   sodium metal  
  Hint    
      
  18.In sodium chloride, which atom loses an electron?  
  a.   neither  
  b.   chloride  
  c.   salt  
  d.   sodium  
  Hint    
      
  19.Chemical compounds are __________.  
  a.   always unstable  
  b.   more stable than their individual elements  
  c.   always stable  
  d.   less stable than their individual elements  
  Hint    
      
  20.How many electrons are shared in a double bond?  
  a.   one pair  
  b.   two pairs  
  c.   two  
  d.   one  
  Hint    

 
   
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