JQuiz Instructions

1. What is the charge of a molecule?

   1.   ?    positive
   2.   ?    negative
   3.   ?    neutral

2. What sort of bond holds the atoms of a molecule together?

   1.   ?    ionic
   2.   ?    covalent
   3.   ?    hydrogen

3. The bond formed where electrons are equally or nearly equally shared between atoms is called?

   1.   ?    ionic
   2.   ?    covalent
   3.   ?    hydrogen

4. The bond formed when electrons are largely transferred from one atom to another:

   1.   ?    ionic
   2.   ?    covalent
   3.   ?    hydrogen

5. The bond between two identical atoms is:

   1.   ?    polar covalent
   2.   ?    ionic
   3.   ?    nonpolar covalent

6. Ionic bonds are between:

   1.   ?    identical atoms
   2.   ?    atoms with similar electronegativities
   3.   ?    atoms with widely different electronegativities

7. A large electronegativity difference makes the bond --

   1.   ?    more ionic
   2.   ?    more covalent
   3.   ?    more neutral

8. On paper -- draw the Lewis dot structure for ammonia

   
   
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9. Name the shape of the molecular structure of an ammonia molecule--

   1.   ?    linear
   2.   ?    trigonal
   3.   ?    trigonal pyramidal
   4.   ?    tetrahedral

10. Name the shape of the electronic structure of an ammonia molecule.

    1.   ?    linear
    2.   ?    trigonal
    3.   ?    trigonal pyramid
    4.   ?    tetrahedral

11. The C-F bond is very polar, yet CF4 is nonpolar. Why? (One word suffices)

    
    
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12. Why does water have a higher boiling point than other liquids of similar molar mass?

    1.   ?    Hydrogen bonds (highly polar interactions) make the molecules stick together.
    2.   ?    High boiling points are predicted for low molar masses.
    3.   ?    Water is nonpolar

13. Who is credited most with the periodic table?

    1.   ?    Rutherford
    2.   ?    Mendeleev
    3.   ?    Bohr
    4.   ?    Dalton

14. Xenon is:

    1.   ?    halogen
    2.   ?    noble gas
    3.   ?    noble metal
    4.   ?    alkaline earth metal

15. sodium is:

    1.   ?    noble gas
    2.   ?    noble metal
    3.   ?    alkali metal
    4.   ?    transition metal

16. calcium is :

    1.   ?    alkaline earth metal
    2.   ?    noble metal
    3.   ?    alkali metal
    4.   ?    transition metal

17. Electronegativity generaly increases from ____ to ____ on the periodic table.

    1.   ?    lower right to upper left
    2.   ?    left to right
    3.   ?    lower left to upper right
    4.   ?    top to bottom

18. Ionization energy refers to what particle?

    1.   ?    electron
    2.   ?    proton
    3.   ?    neutron
    4.   ?    neutrino

19. A cation is:

    1.   ?    A positive electrode
    2.   ?    A positive ion
    3.   ?    A negative electrode
    4.   ?    A negative ion

20. An anion is:

    1.   ?    A positive electrode
    2.   ?    A negative electrode
    3.   ?    A positive ion
    4.   ?    A negative ion