| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | ammonium bromide | chemistry laboratory | Common chemical compound used in laboratory experiments and as a reagent in chemical reactions. | 1 |
| 2 | ammonium bromide | chemistry labs | Used as a reagent in chemical reactions and experiments. | 1 |
| 3 | ammonium bromide | chemistry labs in developed countries | Commonly used in chemical experiments and processes in developed countries. | 1 |
| 4 | ammonium hydroxide | chemistry lab | Used as a common household cleaner in some countries | 1 |
| 5 | ammonium hydroxide | chemistry labs in the US | Used as a common cleaning agent and in industrial processes | 1 |
| 6 | ammonium thiocyanate | chemistry labs | Used as a reagent in chemical reactions and experimentation. | 1 |