Item SC067003: When two liquids are mixed together and a solid forms, the solid is a new substance that was formed during a chemical reaction between the two liquids.

A student mixes two different liquids together. After mixing the liquids, a solid substance forms that cannot be turned back into the starting liquids. The student claims that a chemical reaction occurred. Why is the student correct?

  1. Because a solid substance is always formed during a chemical reaction
  2. Because a new substance is always formed during a chemical reaction
  3. Because a chemical reaction always occurs when two substances are mixed together
  4. Because the products of a chemical reaction can never be turned back into the starting substances

Distribution of Responses

Chart showing distrubtion of responses for Item SC067003

Percent of students responding correctly

Overall39%
Grades 6–837%
Grades 9–1241%
Male40%
Female38%
Primary Language is English40%
Primary Language is not English34%

View data table