Polarity
- Complete each of the following sentences by filling in the appropriate word or phrase from the list below.
nonpolar unequally
polar electric
negative polarity
shape molecule
equally
1. In a polar bond, electrons are shared _____________________________between two atoms.
2. A molecule that is composed of only one kind of atom is a(n) ___________________ molecule.
3. The _______________ of a molecule, as well as the polarity of its bonds, determines the polarity of the molecule.
4. In a polar molecule, one end of the molecule is positive and the other end is _______________.
5. Polar molecules align themselves in a(n) __________________ field.
6. The ___________________ of a large molecule helps to determine its shape.
- Identify each of the following molecules as a polar or nonpolar molecule. Write your answer on the line provided.
7. HF __________________________
8. F2 __________________________
9. H2O _________________________
10.O3 __________________________
11. CBr4 ________________________
12. C2H4 ________________________
- Solve each of the following problems as directed. Show all your work.
13. Illustrate the molecular shape of each of the following molecules. Identify each molecule as polar or nonpolar.
a. BFI2 b. NH2Cl
c. SCI2 d. BF
e. H2O f. CO2
g. CCl4 h. NF3
- Answer each of the following questions in the space provided.
14. Why is HCl a polar molecule while Cl2 is a nonpolar molecule? ________________________
_____________________________________________________________________________
15. Explain why water has different properties from carbon dioxide. Base your answer on the molecular structure of these substances. ____________________________________________
_____________________________________________________________________________