Item AM035004: When a piece of solid wax is heated, it becomes a liquid and the wax molecules become more loosely connected to each other.

A piece of solid wax is placed in a pan and heated on a stove. After a while, the solid wax becomes a liquid. Which one of the following explains why the wax becomes a liquid?

  1. Some of the wax molecules get smaller.
  2. Some of the wax molecules are destroyed.
  3. The wax molecules change into water molecules.
  4. The wax molecules are more loosely connected to each other.

Distribution of Responses

Chart showing distrubtion of responses for Item AM035004

Percent of students responding correctly

Overall54%
Grades 6–848%
Grades 9–1265%
Male53%
Female55%
Primary Language is English57%
Primary Language is not English33%

View data table