Item SB045002: 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. Salt crystals being crushed into a powder
  2. A powder dissolving in hot water to make hot chocolate
  3. The water from sweat evaporating off of your skin and into the air
  4. Proteins from food being broken down into amino acids in your digestive system
Distribution of Responses
Chart showing distrubtion of responses for Item 045002
Points Earned
Group Correct Total Percent
Overall 278 378 74%
Grades
  6–8 278 378 74%
  9–12 N/A N/A N/A
Gender
  Male14820771%
  Female13017176%
Primary Language
  English26435075%
  Other142850%

View data table

Distribution of Responses
Chart showing distrubtion of responses for Item 045002
Points Earned
Group Correct Total Percent
Overall 325 378 86%
Grades
  6–8 325 378 86%
  9–12 N/A N/A N/A
Gender
  Male17620785%
  Female14917187%
Primary Language
  English30835088%
  Other172861%

View data table