Original Project
Substances, Chemical Reactions, and Conservation of Matter
Item SC071003: The surface of a copper penny changing color after being in a drawer for years is an example of a chemical reaction.
Which of the following is an example of a chemical reaction?
- Aluminum foil being cut into smaller pieces
- A drop of food coloring dissolving in water
- Melted butter becoming a solid when placed in the refrigerator
- The surface of a copper penny changing color after being in a drawer for years
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 3656 |
6–8 n = 2433 |
9–12 n = 1215 |
Male n = 1763 |
Female n = 1823 |
English n = 3201 |
Other n = 380 |
||
| A. | Aluminum foil being cut into smaller pieces | 8% | 8% | 9% | 10% | 7% | 8% | 12% |
| B. | A drop of food coloring dissolving in water | 29% | 33% | 22% | 28% | 30% | 28% | 32% |
| C. | Melted butter becoming a solid when placed in the refrigerator | 19% | 20% | 17% | 19% | 20% | 19% | 21% |
| D. | The surface of a copper penny changing color after being in a drawer for years | 44% | 40% | 52% | 44% | 44% | 45% | 36% |