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Chemical Bonds

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

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