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
Students Responding Correctly
Group Correct Total Percent
Overall 1814 4657 39%
Grades
  6–8 907 2449 37%
  9–12 897 2179 41%
Gender
  Male872219940%
  Female906236038%
Primary Language
  English1631412040%
  Other14041134%

View data table