| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | acetaldehyde | chemistry | Acetaldehyde is a colorless liquid with a pungent, fruity odor, commonly used as a chemical intermediate in the production of acetic acid. | 1 |
| 2 | aromatic compound | Chemistry field | Aromatic compounds are a key focus in organic chemistry, as they exhibit unique stability and reactivity. | 1 |
| 3 | benzene | chemistry community | Benzene is a widely studied and important aromatic hydrocarbon compound with a hexagonal ring structure. | 1 |