| Answer | Crossword Clue |
|---|---|
| GASEOUS | Like hydrogen and chlorine |
| hydrochloric | applied to an acid composed of hydrogen and chlorine, hydrogen chloride, still sometimes called muriatic acid |
| GASES | Hydrogen, chlorine, etc. |
| HALOGEN | Element like chlorine. |
| TOXIC | Like chlorine gas |
| REACTIVE | Like atomic hydrogen |
| catalatic | of or like catalase, an enzyme that reduces hydrogen peroxide |
