Ionic Chemistry - Test 2


1. Which of the following metals is hardest?

    A. Be
    B. Mg
    C. Ca
    D. Ba


2. A piece of iron is hammered flat on an anvil. As a result the iron is:

    A. harder
    B. softer
    C. less able to conduct electricity
    D. better able to conduct electricity


3. Ionic particles:

    A. are present only in water solutions
    B. may exist in crystalline solids
    C. are present in covalent gases
    D. are neutral molecules


4. Which of the following compounds would be expected to have the lowest melting point?

    A. LiF
    B. NaF
    C. KF
    D. CsCl


5. The yield of ester is increased by the addition of

    A. water
    B. sodium chloride
    C. sulfuric acid
    D. sodium


6. Hydrogen bonding in water is due to the presence of:

    A. electrons in nonbonding orbitals
    B. the 104.7 degree bond angle
    C. a linear structure
    D. excess hydrogen atoms


7. Which of the following bonds is strongest?

    A. Si-H
    B. Si-F
    C. Si-Cl
    D. Si-I


8. One would expect a high hydration energy of an ion with:

    A. high charge and small radius
    B. high charge and large radius
    C. low charge and small radius
    D. low charge and large radius


9. One would expect a very high melting point for a:

    A. molecular solid
    B. metallic solid
    C. ionic solid
    D. covalent solid


10. Ionic crystals are brittle because distortion of the crystal lattice produces:

    A. a flow of the electron gas
    B. ionization of some atoms
    C. interionic attractions
    D. interionic repulsions






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