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

  1. A marshmallow turning black when heated over a fire
  2. A powder dissolving in water to make lemonade
  3. An ice cube melting into a puddle of water
  4. Salt crystals being crushed into a powder
Distribution of Responses
Chart showing distrubtion of responses for Item SC065004
Students Responding Correctly
Group Correct Total Percent
Overall 1387 3555 39%
Grades
  6–8 857 2437 35%
  9–12 522 1096 48%
Gender
  Male698166942%
  Female660180936%
Primary Language
  English1232315039%
  Other11631537%

View data table