CHM 1025C Module Four Sample 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. Na-Cl ________________

2. Mg-O ________________

3. S-O ________________

4. Cu-Fe ________________

5. Si-S ________________

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 _____________________

2. SO₃ _____________________

3. N₂O₅ _____________________

4. N₂O₇ _____________________

5. N₂O _____________________

6. Phosphorus pentachloride _________

7. Boron trifluoride _________

8. Carbon dioxide _________

9. Sulfur Trioxide _________

10. Carbon Tetrachloride _________

Online Homework:

C: Binary Molecular (Covalent) Homework: http://www.fccj.us/Nomenclature/Molecules/binaryCovalent.html

C1. Binary Molecular (Covalent) Formulas: http://www.fccj.us/Nomenclature/MoleculeFormula/BinaryMolecularFormula.html