2. ________________________ is the conversion of an atom of one element into an atom of another element.

3. Ionization energy-

4. ________________________ is a positively charged atom.

5. Melting point-

6. ________________________ is a negatively charged atom.

7. Formula unit-

8. ________________________ is a large, usually unstable nucleus formed by the bombardment of one element with a particle or a second atom.

9. VSEPR-

10. ________________________ is a d⁺ and d^- region of a molecule, separated by space.

Part B. Concepts
1.  State the periodic law. (4 points)

2. State the octet rule. (4 points)

3. Construct a table of the 3 major types of radiation. Include the name, charge, mass, identity and strength of the particles emitted. (6 points)

4.  Name three groups on the periodic table. I am not looking for metals, nonmetals and metalloids. (3 points)

5.  State the periodic trends for melting point and electronegativity. (4 points) For a bonus point each, list the element of our periodic table which has the highest value for these physical properties.

6.  Name the following molecules. (6 points)
(NH₄)₂SO₄     ________________________
P₂O₅              ________________________
CCl₄               ________________________
Mg₃(PO₄)₂     ________________________
CsF                ________________________
NH₄Cl             ________________________

7.  Draw the Lewis dot structures of the following molecules. Include all lone pairs in the diagram. From the dot structure, predict the shape of the molecule. (8 points)
     OFH          NH₄⁺          HF          PCl₃
     ______     ______          ______          ______
     shape          shape             shape          shape

8.  We discussed in class a number of uses of radiation, which are also covered in your book. Write a brief paragraph outlining one use and the property or properties of radiation that makes this use possible. (10 points)

9.  How many valence electrons do the following elements have? (5 points) What oxidation state will they develop? (5 points)
          valence electrons          oxidation state
K           _________              ____________
Kr         _________               ____________
P           _________               ____________
H          _________                ____________
He         _________               ____________

10.  How many bonds will the following elements form? (3 points)
F     ____________
Se     ____________
Al     ____________

11.  What is the formula unit for the interaction between magnesium and chlorine? (2 points) Will this molecule conduct electricity in solution? (2 points)

12.  In the far reaches of the Arctic circle, a new element is found. Dr. Doolittle has decided to name the element mysterium, My, but hasn't gotten around deciding where the element should be placed. Help him out by looking at the properties of this element and deciding where on the periodic table it should be placed. (3 points)
My + chlorine ---->MyCl₄
My + oxygen ----> MyO₂
The electronegativity of My is very low.

13.  What element has decayed in the following reaction? (2 points)
______ ----> _-1e + ²¹⁰Po

14.  What is the second product of the following reaction? (2 points)
³H ----> ³He + ______

15.  Write an equation for the gamma decay of ³²P. (2 points)

16.  In trying to develop a milder fragrance for perfume, scientists last summer exposed a Jasmin plant to gamma radiation. After exposing the plant, there was no visible effect on the plant, but offspring of the plant had a less powerful odor. Was the mutation which had occurred a somatic or a genetic mutation? (2 points)

17.  Predict the type of bond between the following pairs of elements. Be specific. (3 points)
C-H     ____________
Na-F     ____________
C-Cl     ____________

18.  Predict whether the following molecules are polar or nonpolar. (4 points)

____________     ____________     ____________     ____________

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