CHM 2045C Sample Test               Name: ____________________


Module Four: Part B Dot Structures of Molecules          30 points


Using a periodic chart draw the electron dot structures or dot/stick structures of the following molecules: (You must show all lone pairs) (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)