Original Project
Substances, Chemical Reactions, and Conservation of Matter
Item SC059004: When a chemical reaction occurs in a sealed container, the mass of the materials in the container stays the same.
A chemical reaction is taking place in a sealed container. What will happen to the mass of the materials in this sealed container?
- The mass will increase.
- The mass will decrease.
- The mass will stay the same.
- It will depend on which chemical reaction occurs.
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 1332 | 3646 | 37% |
| Grades | |||
| 6–8 | 746 | 2423 | 31% |
| 9–12 | 583 | 1215 | 48% |
| Gender | |||
| Male | 665 | 1761 | 38% |
| Female | 640 | 1814 | 35% |
| Primary Language | |||
| English | 1163 | 3198 | 36% |
| Other | 130 | 374 | 35% |