Identify which of the following is NOT an observation.
a. Heat is released when an acid is neutralized with a base.
b. Energy is converted from one form to another.
c. Iodine vapor is color purple.
d. The distance between A and B is 5 m.

• A. Heat is released when an acid is neutralized with a base.
• B. Energy is converted from one form to another.
• C. Iodine vapor is color purple.
• D. The distance between A and B is 5 m.

Answer: (B)