CHM 1025C Module Four Sample Exam Name: ____Answers__

 

A. _____(10) Bond Recognition/Compound Classification-Sections 7.1, 12.1-12.3

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

C. _____(10) 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. _____(10) Binary Acids/ Ternary Oxyacids-Section 7.8,7.9

H. _____(15) Inorganic Compounds 7.2-7.9

_______(105) Total = ______%

M._____ (25) Multiple Choice Chapter 12, 7

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)

 

You may practice your drawing by dragging and dropping the atoms on the Internet at: http://www.lsua.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

 

 

 

 

 

3. HNO3 H2CO3 HNO2 4. CO2 HCN CO SO3 SO2

Nitric Acid Carbon Dioxide

Carbonic Acid Hydrogen Cyanide

Nitrous Acid Carbon Monoxide

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 CH3CH2OH 8. CH3OCH3 CHONH2 CH3CH2CH2OH

carbon to carbons by single covalent bonds oxygen separates the carbons

Formaldehyde Dimethyl Ether

Acetone Methanamide

Ethanol 1-Propanol

 

 

 

9. CH2NH2COOH CH3CHNH2COOH 10. CH3COOCH2CH3 CHOOCH3

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

Glycine Ethyl ethanoate

Alanine Methyl methanoate