CHEM 1001/CHM 1020/CHM1025C/CHM 1032C                   Name _____ Answers ___________

Module Four Exam

Module Four: Part A: Bond Recognition                              5 points

 

Using a periodic chart, classify each element in the pair as a metal or nonmetal, then predict the bond type that should exist between the two elements.  (Assume all metal-nonmetal combinations have an electronegativity difference greater than 1.7.)

 

 

1.

 

K-Br

 

____ionic____________

 

4.

 

C-H

 

____covalent____________

 

2.

 

P-Cl

 

____Covalent_________

 

5.

 

Cu-Zn

 

____metallic___________

 

3.

 

Cu-S

 

____ionic____________

 

 

 

 

 

 

 

 

Module Four: Part C: Binary Molecular Compounds           5 points

 

Using a periodic chart write the names or formulas of the following compounds depending on whether the formula or the name is given.

 

 

1.

 

CO2

 

___carbon dioxide ____

 

2.

 

SO2

 

___Sulfur dioxide______

 

3.

 

N2O3

 

___Dinitrogen Trioxide__

 

  4.     Phosphorus Pentachloride           ___PCl5_____

 

  5.     Nitrogen Trihydride (Ammonia)    ___NH3_____

 

 

Module Four: Part D: Binary Ionic Compounds                   5 points

 

Using a periodic chart, write the names or the balanced formulas for the following compounds depending on whether the formula or the name is given:

 

  1.     Lithium Sulfide           ___Li2S_____________

 

  2.     Iron II Chloride           ____FeCl2____________

 

  3.     Tin IV Fluoride           ____SnF4____________

 

  4.     CaF2                          __Calcium fluoride_________

 

  5.     Co3P2                         __Cobalt II phosphide______________

 

 

 


 

Module Four: Part B: Dot Structures of Modules                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

Ammonia                                                                              Sulfuric Acid

Methane                                                                                                Phosphoric Acid

hydrogen peroxide                                                              Perchloric Acid

water

 

 

 

 

 

3.     HNO3   H2CO3  HNO2                4.      CO2    HCN    CO   SO3  

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                                              CH3OCH3

                            carbon to carbons by single covalent bonds                oxygen separates the carbons

Formaldehyde

Acetone

Dimethyl Ether

 

 

 

Module Four: Part E: Polyatomic Ions                  5 points

 

Using a periodic chart write the names or formulas of the polyatomic ions depending on whether the formula or the name is given.   (The formula must include the ion’s appropriate charge.)

 

  1.     SiO3 2-            __silicate______________

 

  2.     SO4 2-             __sulfate______________

 

  3.     PO4 3-             __phosphate___________

 

  4.     ClO4 1-            __perchlorate__________

 

  5.     NO2 1-             __nitrite_____________

 

  6.     Hydroxide      __OH 1-______________

 

  7.     Ammonium    __NH4 1+______________

 

  8.     Hypochlorite  __ClO 1-______________

 

  9.     Nitrate            __NO3 1-_____________

 

 10.    Sulfite            __SO3 2-______________

 

 

 

BONUS: If you miss one of the above questions, one of the ions below will replace

                      any incorrect answer, provided the bonus answer is correct.

 

  Bonus #1      Acetate                   ___C2H3O2 1-_____________

 

  Bonus #2      Cyanide                  ___CN 1-_____________

 

  Bonus #3      Thiocyanate            ___CNS 1-_____________

 

 

Module Four: Part F: Ternary Ionic Compounds                         5 points

 

Using a periodic chart write the names or formulas of the following compounds depending on whether the formula or name is given:

 

 

  1.     K2SiO3            _Potassium silicate______________

 

  2.     Na3PO4           _Sodium phosphate_____________

 

  3.     (NH4)2SO3       _Ammonium sulfite______________

 

  4.     Mg(OH)3         __Magnesium hydroxide__________

 

 5.     Fe(IO3)3          __Iron III Iodate______________

 

  6.     Ammonium Hydroxide      ___NH4OH_____________

 

  7.     Aluminum Hydroxide        ___Al(OH)3_____________

 

  8.     Sodium Perchlorate          ___NaClO4_____________

 

  9.     Calcium Nitrite                  ___Ca(NO2)2____________

 

 10.    Copper II Sulfate              ____CuSO4___________

 

Module Four: Part G: Binary/Ternary Acid                   5 points

 

Using a periodic chart write the names or balanced chemical formulas of the following compounds, depending on whether the formula or the name is given. (Assume all compounds in a aqueous solution):

 

 

 

  1.     HCl                       _Hydrochloric Acid_______________

     

  2.     HClO                     _Hypochlorous Acid_______________

 

  3.     HClO2                    _Chlorous Acid_______________

 

  4.    HClO3                     _Chloric Acid______________

 

  5.    HClO4                     _Perchloric Acid_______________

 

  6.     Nitric Acid              __HNO3______________

 

  7.     Carbonic Acid        __H2CO3______________

 

  8.     Sulfuric Acid           __H2SO4______________

 

  9.     Phosphoric Acid     __H3PO4______________

 

 10.    Nitrous Acid            __HNO2______________

 

Module Four: Part H:   Inorganic Compounds                                               10 points

 

Using a periodic chart write the names or balanced chemical formulas of the following compounds, depending on whether the formula or the name is given:

 

 

 

  1.     CO2                                __Carbon dioxide_____________

     

  2.     H2O2                               __Dihydrogen dioxide  (Hydrogen Peroxide)_

 

  3.     HBrO3  (aq)                    __Bromic Acid______________

 

  4.     Fe2O3                             __Iron III oxide______________

 

  5.    NiSO4                              __Nickel II sulfate______________

 

  6.     Calcium Phosphate       __Ca3(PO4)2______________

 

  7.     Sodium Hydroxide         ___NaOH_____________

 

  8.     Sulfurous Acid                ___H2SO3_____________

 

  9.     Aluminum Carbonate     ___Al2(CO3)3_____________

 

 10.    Ammonium Chloride      ___NH4Cl_____________

 

Module Four: Part M:   Multiple Choice                        10 points

 

1.   According to the general trends in the periodic table, which of the following                       elements is the most electronegative?

 

 

(a) O

 

(b) F

 

(c) P

 

(d) S

 

(e) Cl

 

 

2.   Draw the electron dot formula for ethylene, C2H4, and state the type of bonds in one        molecule.

 

 

(a) 6 single       bonds

 

(b) 5 single        bonds

 

(c) 4 single        bonds and 1 double bond

 

(d) 4 single       bonds and 2 double  bonds

 

(e) 4 single       bonds and 1 triple bond

 

 

3.   Magnesium metal and oxygen gas react to form the ionic compound magnesium             oxide.  Which of the following statements is true?

 

(a) Valence electrons are transferred from oxygen to magnesium atoms.

(b) The magnesium atom and the magnesium ion have the same number of valence             electrons.

(c) Magnesium and magnesium oxide have similar properties.

(d) The smallest representative particle is a molecule.

(e) none of the above

 

 

4.   Which noble gas is isoelectronic with a lithium ion?

 

 

(a) helium

 

(b) neon

 

(c) argon

 

(d) krypton

 

(e) xenon

 

 

5.   Which of the following ions has the electron configuration 1s2 2s2 2p6

 

 

(a) F-1

 

(b) O2-

 

(c) N3-

 

(d) all of the above

 

(e) none of the above

 

 

 


 

 

 

6.   What type of chemical bond results from transferring valence electrons from a metal        to a nonmetal?

 

 

(a) covalent bond

 

(b) ionic bond

 

(c) metallic bond

 

(d) coordinate covalent bond

 

(e) none of the above

 

 

7.   The mercury (II) ion, Hg2+, is classified as which of the following?

 

 

(a) monoatomic cation

 

(b) monoatomic anion

 

(c) polyatomic cation

 

(d) polyatomic anion

 

(e) none of the above

 

 

8.   Aqueous H2S is classified as which of the following?

 

 

(a) binary ionic

 

(b) ternary ionic

 

(c) binary molecular

 

(d) binary acid

 

(e) ternary oxyacid

 

 

9.   What is the formula for the nitride ion?

 

 

(a) N3-

 

(b) N2-

 

(c) N

 

(d) NO2-

 

(e) NO2-

 

 

 

 

10.   What is the formula for the hydrogen carbonate ion?

 

 

(a) C2H3O2-1

 

(b) C2H3O22-

 

(c) HCO3-1

 

(d) HCO32-

 

(e) none of the above