Chapter 2

Question 1

polar covalent bond

Answer 1

electrons are shared unequally between 2 atoms
-results in partial charges
Example: H2O

Question 2

non polar covalent bond

Answer 2

electrons are shared equally between 2 atoms
-do not mix well in H2O
-no charge
Example: H2, O2, C–C, C–H

Question 3

ionic bond

Answer 3

electron lost/gained
-results in cation/anion
Example: NaCl

Question 4

Hydrophilic- polar or nonpolar

Answer 4

polar

Question 5

Hydrophonic- polar or nonpolar

Answer 5

nonpolar

Question 6

carbon bond formation and why

Answer 6

4 covalent bonds

• tetrahedron shape
• each bond rotates freely