Name:_______________________ Per:_____
Polarity- Are you Hogging my Electrons?
1.
Explain the difference between a polar covalent bond and a non-polar covalent bond. Give an example of
each.
2. To the right is a picture of a polar covalent bond.
a. What does the arrow pointing at the F indicate?
b. What does the S- mean?
c.
What does the S + mean?
d. What would need to happen with the electrons to make this bond ionic? Give example.
e.
1.
What would need to happen with the electrons to make this bond non-polar covalent? Give example
Molecule
H 20
A. Draw showing correct 3-D
VSEPR Shape
B. Determine & record if the
molecule is polar or non-polar
C. If polar, show partial charges
and arrows
Ex:
Polar
Molecule
7. O2
Shape:
Shape:
2. CH4
8. N2
Shape:
Shape:
3. NH3
9. CH3OH
Shape:
Shape:
4. H2S
10. Cl2O
Shape:
Shape:
5. HBr
11. PF3
Shape:
Shape:
6. CO2
12. CHCl3
Shape:
Shape:
A. Draw showing correct 3-D VSEPR
Shape
B. Determine & record if the molecule is
polar or non-polar
C. If polar, show partial charges and
arrows
“The Bare Essentials of Polarity”
Directions: Read the comic & answer the following questions:
1.
How does the comic book define a “polar molecule”?
2. Interpret the picture at the bottom of page 1. Explain how the iceberg,
penguins, and polar bears represent trends in electronegativity.
3. What is the artist trying to show when there are 2 polar bears arm wrestling together or 2 penguins arm
wrestling together?
4. a. What 3 types of bonds are represented on the third page of the comic book?
b. What happens to the bonding electrons in each type of bond?
5. Explain why there are 4 scoops of ice cream in the illustration of O 2 on page 3.
6. What do the 6 scoops of ice cream represent in the illustration of N2 on page 4?
7. Describe what you think is happening to the penguin in the CO2 molecule in the illustration on page 4.
8. Name 3 things that the picture of CO2 on page 4 illustrates about the molecule.
9. Describe what you think is happening to the penguins in the H 2O molecule in the illustration on page 4.
10. Explain what you think the crossed arrow represents in the comic book.
11. What are the 2 definitions of “dipole” given in the comic book?