Item AM032005: The average speed of water molecules in a closed container kept at a constant temperature stays the same.
A container of water was closed and kept at a constant temperature. Which of the following statements about the motion of the water molecules is TRUE?
- The water molecules stopped moving.
- The average speed of the water molecules stayed the same.
- The average speed of the water molecules increased a little bit.
- The average speed of the water molecules decreased a little bit.
- Distribution of Responses
![Chart showing distrubtion of responses for Item AM032005](http://chart.apis.google.com/chart?chs=265x180&cht=bvg&chf=bg,s,00000000&chco=76A4FB|339933|76A4FB|76A4FB&chds=0,100&chd=t:12,56,17,15&chxl=0:|A|B|C|D&chxt=x,y&chbh=a&chbw=a&chm=N*f0*%,000000,0,-1,11,,e::5&filename=AM032005-dist.png)
- Students Responding Correctly
Group | Correct | Total | Percent |
---|---|---|---|
Overall | 2141 | 3834 | 56% |
Grades | |||
6–8 | 1448 | 2792 | 52% |
9–12 | 688 | 1033 | 67% |
Gender | |||
Male | 1081 | 1905 | 57% |
Female | 1041 | 1894 | 55% |
Primary Language | |||
English | 1944 | 3400 | 57% |
Other | 167 | 383 | 44% |
- Notes
- See performance expectation MS-PS1-4. Develop a model that predicts and describes changes in particle motion, temperature, and state of a substance when thermal energy is added or removed.