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Item AM076002: The molecules of cold water move slower than the molecules of hot water.

How do the molecules of cold water differ from the molecules of hot water?

  1. The molecules of cold water move faster than the molecules of hot water.
  2. The molecules of cold water move slower than the molecules of hot water.
  3. The molecules of cold water move at the same speed as the molecules of hot water.
  4. It is not possible to say anything about how the molecules differ without more information.
Distribution of Responses
Chart showing distrubtion of responses for Item 076002
Students Responding Correctly
Group Correct Total Percent
Overall 1858 2895 64%
Grades
  6–8 1055 1778 59%
  9–12 800 1109 72%
Gender
  Male906138166%
  Female930147363%
Primary Language
  English1704258866%
  Other13627549%

View data table

Notes
See NGSS performance expectation MS-PS1-4: Develop a model that predicts and describes changes in particle motion, temperature, and state of a pure substance when thermal energy is added or removed.