| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | hydrogen sulfide | laboratory settings | Hydrogen sulfide is considered a dangerous and toxic gas in industrial and laboratory settings, and specific safety protocols must be followed to handle it. | 1 |
| 2 | hydrogen sulfide | laboratory settings | Hydrogen sulfide is a colorless, poisonous gas with a characteristic foul odor, commonly used in laboratory experiments and chemical processes. | 1 |
| 3 | sulfuric acid | laboratory settings | Commonly used in laboratory experiments for chemical reactions. | 1 |