Courses

Solubility - Test 1


1. Which has the least effect on the rate of solubility of a solid in a liquid?

    A. surface area
    B. agitation
    C. pressure
    D. temperature


2. Sugar dissolves in water:

    A. due to the formation of hydrogen bonds
    B. due to the formation of ions
    C. because of compound formation
    D. because sugar molecules are ionic


3. The cleaning properties of a soap solution are due to:

    A. reduced surface tension
    B. increased solubility
    C. increased cohesive forces
    D. increased molecular motion


4. Homogenized milk is a colloidal suspension from which proteins may be precipated by:

    A. adding an acid
    B. allowing the milk to settle
    C. filtration
    D. pasteurization


5. Dialysis is the:

    A. separation of ions from colloidal suspensions
    B. coagulation of colloids by ions
    C. movement of colloidal particles in an electrical field
    D. effect of water on a lyophilic colloid


6. Hard water can be caused by the presence of:

    A. nitrate ions
    B. sodium ions
    C. magnesium ions
    D. potassium ions


7. Which procedure is most likely to increase the solubility of nearly all solids?

    A. Stirring
    B. Pulverizing the solid
    C. Heating the solution
    D. Increasing the pressure.


8. Tinctures always contain the solvent:

    A. water
    B. iodine
    C. alcohol
    D. glycerine


9. Which organic compound is very soluble in water?

    A. Benzene
    B. Ether
    C. Ethyl alcohol
    D. Carbon tetrachloride


10. When clay is mixed with water the clay particles are:

    A. dissolved
    B. suspended
    C. emulsified
    D. miscible






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