CHM 1025C Module Four Sample Exam

A. _____(05) Bond Recognition/Compound Classification-Sections 7.1, 12.1-12.3

B. _____(30) Dot Structures of Molecules-Section 12.4, 12.5

C. _____(05) Binary Molecular(Covalent) Compounds-Section 7.7

D _____(10) Binary Ionic Compounds-Section 7.2, 7.5

E. _____(10) Polyatomic Ions-Section – section 7.3, 7.6

F. _____(10) Ternary Ionic Compounds-Section 7.3, 7.6

G. _____(05) Binary Acids/ Ternary Oxyacids-Section 7.8,7.9

H. _____(12) Inorganic Compounds 7.2-7.9

M._____ (20) Multiple Choice Chapter 12, 7

_______(107) Total = ______%

Module Four: Part B Dot Structures of Molecules 30 points

Using a periodic chart draw the electron dot structures of the following molecules:

(Choose One for each question or the one circled on the paper)

1. NH₃ CH₄ H₂O₂ H₂O 2. H₂SO₄ H₃PO₄ HClO₄ HClO₃

3. HNO₃ H₂CO₃ HNO₂ 4. CO₂ HCN CO SO₃

5. HC₂H₃O₂ H₂C₂O₄ HCHO₂ 6. C₂H₄ C₂H₂ C₃H₈ C₂H₆

carbon to carbon by single covalent bond bond carbons to carbon

7. CH₂O CH₃COCH₃ CH₃CH₂OH 8. CH₃OCH₃ CHONH₂

carbon to carbons by single covalent bonds oxygen separates the carbons O & N both bond to C

9. CH₂NH₂COOH CH₃CHNH₂COOH 10. CH₃COOCH₂CH₃ CHOOCH₃

(work on back) carbon to carbons by single covalent bonds (CH₂ also hooks to oxygen in#2)