CHM 2045C Sample test Name: ____Answers_______

A. _____(04) Bond Recognition/Compound Classification-Sections 9.2, 9.3 Answers acd

B. _____(15) Dot Structures of Molecules-Section 9.4 Answers

C. _____(04) Binary Molecular(Covalent) Compounds-Section 3.4 Answers acd

D _____(04) Binary Ionic Compounds-Section 3.3 Answers acd

E. _____(04) Polyatomic Ions-Section 3.3 Answers e

F. _____(04) Ternary Ionic Compounds-Section 3.3 Answers f

G. _____(04) Binary Acids/ Ternary Oxyacids-Section 5.3 Answers g

H. _____(06) Inorganic Compounds Answers h

I. _____ (15) Multiple Choice Kotz Online

_______(60) Total = ______%

Module Four: Part B Dot Structures of Molecules 15 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)

You may practice your drawing by dragging and dropping the atoms on the Internet at: http://www.fccj.us/chem1001/dragdrop/menu.html

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

Ammonia Sulfuric Acid

Methane Phosphoric Acid

hydrogen peroxide Perchloric Acid

water Chloric Acid

3. HNO₃ H₂CO₃ HNO₂ 4. CO₂ HCN SiO₂ SO₃

Nitric Acid Carbon Dioxide

Carbonic Acid Hydrogen Cyanide

Nitrous Acid Silicon Dioxide

Sulfur Trioxide

5. HC₂H₃O₂ H₂C₂O₄ HCHO₂ 6. C₂H₄ C₂H₂ C₃H₈ C₂H₆

carbon to carbon by single covalent bond

Acetic Acid Ethylene

Oxalic Acid Acetylene

Formic Acid Propane

Ethane

7. CH₂O CH₃COCH₃ CH₂NH₂COOH 8. CH₃OCH₃ CHONH₂ CH₃COOCH₂CH₃

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

the carbons bond to C covalent bonds

(CH₂ also hooks to oxygen in#3)

7. Formaldehyde

Acetone

Glycine

8. Dimethyl Ether

Metanamide

Ethyl Acetate