Original Project
Atoms, Molecules, and States of Matter
Item AM031004: The bubbles that form when water boils are made of water molecules.
When water boils, bubbles rise to the surface of the water. What are the bubbles made of?
- Air molecules
- Heat molecules
- Water molecules
- Oxygen molecules
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 435 | 2905 | 15% |
| Grades | |||
| 6–8 | 250 | 1863 | 13% |
| 9–12 | 185 | 1033 | 18% |
| Gender | |||
| Male | 236 | 1434 | 16% |
| Female | 196 | 1440 | 14% |
| Primary Language | |||
| English | 374 | 2551 | 15% |
| Other | 52 | 304 | 17% |
- Disciplinary Core Ideas
- PS1.A In a liquid, the molecules are constantly in contact with others; in a gas, they are widely spaced except when they happen to collide. In a solid, atoms are closely spaced and may vibrate in position but do not change relative locations.
PS1.A The changes of state that occur with variations in temperature or pressure can be described and predicted using these models of matter.