| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | chemical reaction | United States | Chemical reactions are often used in industry and manufacturing processes to produce various products. | 1 |
| 2 | chemical reaction | United States | Chemical reactions are often demonstrated in school science experiments, and are a fundamental topic in chemistry education. | 1 |
| 3 | chemical reactions | United States | Chemical reactions are commonly taught in science classes in schools. | 1 |