Item SC073002: Some chemical reactions can be reversed.

Which of the following statements about chemical reactions is TRUE?

  1. All chemical reactions are dangerous.
  2. Some chemical reactions can be reversed.
  3. Chemical reactions occur only in a laboratory.
  4. Chemical reactions require starting with at least two substances.

Distribution of Responses

Chart showing distrubtion of responses for Item SC073002

Percent of students responding correctly

Grades 6–816%
Grades 9–1224%
Primary Language is English19%
Primary Language is not English19%

View data table