CHEM 1001 Answers                                Name: ____________________


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.         Na-Cl           ___Ionic_____             4.    Cu-Fe    ___metallic______


2.         Mg-O           ___Ionic_____              5.    Si-S      ____covalent______


3.         S-O              ___covalent______


See your Corwin textbook Section 12.1. Work Problems 6-10 p 336 for similar exercises


Module Four: Part C    Binary Molecular Compounds      10 points

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


1.    CO       __carbon monoxide______


2.    SO3     ___sulfur trioxide________


3.    N2O5   ___dinitrogen pentoxide___


4.    CCl4   ___Carbon tetrachloride___


5.    CO2   ___Carbon Monoxide______


6.    Phosphorus trichloride          __PCl3___


7.    Boron trifluoride                     __BF3___


8.    Dihydrogen monoxide           __H2O____


9.    Dihydrogen Dioxide              __H2O2____


10.  Nitrogen trihydride                __NH3____


In your Corwin textbook see Section 7.7. Similar problems on p189 #43-46


Online Homework:

C: Binary Molecular (Covalent) Homework:  

C1. Binary Molecular (Covalent) Formulas:




Module Three: Part D       Binary Ionic Compounds             10 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.   Copper II phosphide                __Cu3P2_______


2.    Iron III Oxide                           ___Fe2O3______


3.    Lead IV sulfide                        __PbS2_______


4.    Zinc II Nitride                           __Zn3N2___


5.   Sodium Chloride                       __NaCl____


6.   MgCl2        __Magnesium chloride____(no Roman Numeral needed)


7.    NiF2         ___Nickel II fluoride_or__Nickel (II) fluoride____


8.    KBr          ___Potassium Bromide_____


9.    CaI2       ____Calcium Iodide_________


10.  SnF2     _____Tin II Fluoride__or__ Tin (II) Fluoride_____



In your Corwin textbook see sections 7.4 and 7.5.

 Work problems 23-32 on pages 188-189 for similar exercises.


Online Homework:

D: Binary Ionic Compound Homework:

D1. Binary Ionic Formulas: