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12 Elements & Mass
physical science
| Term | Definition |
|---|---|
| Sulfur | 32 |
| Sodium | 22 or 23 |
| Potassium | 39 |
| Aluminum | 26 or 27 |
| Oxygen | 16 |
| Nitrogen | 14 |
| Hydrogen | 1 |
| Helium | 4 |
| Carbon | 12 |
| Chlorine | 35 |
| Calcium | 40 |
| Mercury | 200 or 201 |