Item SC101003: Bubbles of gas forming as a seashell is placed in vinegar is an example of a chemical reaction.

Which of the following is an example of a chemical reaction?

  1. A piece of wax melting and forming a liquid
  2. A piece of chalk making white marks on a chalkboard
  3. Bubbles of gas forming when a seashell is placed in vinegar
  4. A powder dissolving in hot water to make hot chocolate
Distribution of Responses
Chart showing distrubtion of responses for Item SC101003
Students Responding Correctly
Group Correct Total Percent
Overall 1890 3537 53%
Grades
  6–8 1232 2423 51%
  9–12 647 1094 59%
Gender
  Male859166152%
  Female991180255%
Primary Language
  English1719313555%
  Other12731540%

View data table