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.
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
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|---|---|---|---|---|---|---|---|---|
| n = 3646 |
6–8 n = 2423 |
9–12 n = 1215 |
Male n = 1761 |
Female n = 1814 |
English n = 3198 |
Other n = 374 |
||
| A. | The mass will increase. | 17% | 19% | 14% | 17% | 17% | 17% | 18% |
| B. | The mass will decrease. | 15% | 16% | 11% | 15% | 14% | 14% | 17% |
| C. | The mass will stay the same. | 37% | 31% | 48% | 38% | 35% | 36% | 35% |
| D. | It will depend on which chemical reaction occurs. | 32% | 34% | 26% | 30% | 33% | 32% | 31% |