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Chemical Bonds

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

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