Science Home Product Information Site Map Search Contact Us   Glencoe Online
Quizzes Quiz
Chemical Bonds

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

McGraw-Hill / Glencoe
The McGraw-Hill Companies