CHM 1020/1032C 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