Original Project
Atoms, Molecules, and States of Matter
Item AM039004: The distance between water molecules increases as a cup of water is warmed.
What happens when a cup of water is warmed?
- The water molecules break down.
- The number of water molecules increases.
- The mass of the water molecules decreases.
- The distance between the water molecules increases.
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 2047 | 4517 | 45% |
| Grades | |||
| 6–8 | 1087 | 2842 | 38% |
| 9–12 | 957 | 1664 | 58% |
| Gender | |||
| Male | 1040 | 2173 | 48% |
| Female | 975 | 2276 | 43% |
| Primary Language | |||
| English | 1876 | 3995 | 47% |
| Other | 137 | 434 | 32% |
- Notes
- NGSS does not address thermal expansion or contraction of matter.