| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | acid-base reactions | Western countries | Common topic in high school chemistry classes | 1 |
| 2 | acids and bases | Western countries | Taught in schools as fundamental chemistry concepts | 1 |
| 3 | picric acid | Western countries | Picric acid is known as an explosive and used in military applications. | 1 |
| 4 | picric acid | Western countries | Picric acid is primarily known as a chemical used in laboratories and explosives, and is strictly regulated due to its potential hazards. | 1 |