| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | ferric chloride | chemistry lab | Commonly used in chemistry labs for etching and water treatment | 1 |
| 2 | ferric hydroxide | chemistry lab | Ferric hydroxide is a chemical compound formed during the precipitation of iron salts in aqueous solutions. | 1 |
| 3 | iron oxide | chemistry laboratories | Commonly used as a pigment in paints and dyes | 1 |