CHM
2045C Sample Exam Name: ____________________
Module
Four: Part A: Bond Recognition 4 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 ________________ 4. Cu-Fe
________________
2. Mg-O ________________ 5. Si-S ________________
3. S-O ________________
Module Four:
Part C Binary Molecular Compounds 4 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
_____________________
2. SO3 _____________________
3. N2O5 _____________________
4. Phosphorus trichloride _________
5. Boron trifluoride _________
Module
Three: Part D Binary Ionic
Compounds 4 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 _________
2. Iron III Oxide _________
3. Lead IV sulfide _________
4. MgCl2 ________________________
5. NiF2 ________________________