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SELF QUIZ

 Atomic weights (in g/mole): oxygen 16.0; sulfur 32.1, sodium 23.0, iodine 126.9

1. Write the proper isotopic symbol for a phosphorus atom containing 15 protons and 16 neutrons.

2. Rutherford's experiment "discovered":
    a. protons
    b. atoms
    c. neutrons
    d. nuclei
    e. electrons

3. Evidence that atoms contain electrons came from:
    a. alpha scattering experiments
    b. Rutherford
    c. Dalton
    d. cathode ray experiments

4. What is the weight in grams of 1.0 x 105 SO2 molecules?

5. Which atomic model allows for a larger variety of energy levels?
    a. Bohr
    b. wave mechanical

6.   Fill in the blanks:

 

 

        NAME

 

     MASS (amu)

 

       CHARGE

 

 

 

     negligible

 

         -1

 

       proton

 

 

 

 

 

 

 

         1

 

         0

 

 

7.   If one mole of a compound weighs 85 grams, what is the weight of one molecule in a.m.u.?

 

8.              Fill in the blanks.

 

 

 

SYMBOL

 

   #p

 

   #n

 

   #e

 

CHARGE

 

MASS #

 

13N

 

 

 

 

 

 

 

 

 

 

 

 

 

12

 

 

 

 

 

0

 

23

 

 

 

 

 

17

 

 

 

-2

 

33

 

66Zn2+

 

 

 

 

 

 

 

 

 

 

 

 

9.              5.7 x 10-7 moles of Hg contain how many atoms?

 

 

 

 

10.         What is the weight in grams of 1.46 moles of NaI?

 

 

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