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					Chemical Bonds – A Quiz                    true       null   19617



   1. In a chemical formula, the ratio of atoms in the compound is shown by numbers called
      ____.
• [A] oxidation numbers
• [B] superscripts
• [C] hydrates
• [D] subscripts

   2. A chemical bond that occurs when atoms share electrons is a(n) ____ bond.
• [A] ionic
• [B] covalent
• [C] polyatomic
• [D] magnetic
   3. The name given to the combining ability of an atom is ____.
• [A] ionic number
• [B] atomic number
• [C] oxidation number
• [D] atomic mass
   4. How many electrons are needed in the outer energy levels of most atoms for the atom
      to be chemically stable?
• [A] 2
• [B] 4
• [C] 6
• [D] 8
   5. What is the name of the binary compound made of lithium and chlorine?
• [A] chloride lithium
• [B] lithium chlorate
• [C] lithium chloride
• [D] chlorine lithiate
   6. What kind of chemical bond is formed when electrons are gained and lost from atoms?
• [A] ionic
• [B] covalent
• [C] magnetic
• [D] hydrate

   7. What is the name of the compound with the formula NaCl?
• [A] sodium chloride
• [B] chlorine sodiate
• [C] sodium dichloride
• [D] sodium chlorate

   8. Force that holds together the atoms in a compound
• [A] chemical formula
• [B] chemical bond
   9. An atom that has an electrical charge
• [A] element
• [B] ion

   10.           Molecule that has oppositely charged ends
• [A] covalent molecule
• [B] polar molecule
   11.            Number and sign written by the symbol of an ion to indicate its charge
• [A] subscript
• [B] superscript
   12.    Force of attraction between the opposite charges of the ions in an ionic
      compound
• [A] ionic bond
• [B] polar bond

   13.            In the symbol Na+, the + sign is a
• [A] subscript
• [B] superscript
   14.            A chloride ion, Cl-, has ____.
• [A] a negative charge
• [B] no charge
   15.            The compound NaCl is an example of
• [A] an ionic compound
• [B] a polar compound
   16.      When Na+ and Cl- unite to form the compound sodium chloride, the compound
      that forms is ____.
• [A] positively charged
• [B] neutral

   17.            At room temperature, most covalent compounds are ____.
• [A] solids
• [B] liquids or gases
   18.            At room temperature, most ionic compounds are ____.
• [A] solids
• [B] liquids or gases

   19.            In the formula H2O, the number 2 is a
• [A] subscript
• [B] superscript
   20.            In the formula HCl, the ratio of hydrogen atoms to chlorine atoms is ____.
• [A] 1:1
• [B] 2:1
   21.      The number 2 in the formula H2O tells you that each unit of this compound
      contains ____.
• [A] 2 hydrogen atoms
• [B] 2 oxygen atoms

   22.            In the formula Fe2O3, the ratio of iron atoms to oxygen atoms is ____.
• [A] 3:2
• [B] 2:3

   23.            A chemical bond is a ____ that holds together the atoms in a compound.
• [A] force
• [B] chemical

				
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