| REAGENT | Active substance in chemistry |
| IDEALGAS | Perfectly-behaving substance in chemistry |
| SOLUTE | Dissolved substance, in chemistry classes |
| THC | Marijuana's active substance: Abbr. |
| SOLUTES | Dissolved substances in chemistry |
| REAGENTS | Chemically active substances |
| GAMMA | ___ rays : energy radiations from radio-active substances? |
| REACTANT | In chemistry, a substance that participates in and is altered by a chemical reaction (8) |
| ALKALI | In chemistry, a base that dissolves in water |
| TEST | In chemistry, what is the process of detecting the presence of an ingredient in a compound? (4) |
| ELIASJAMESCOREY | Who won the Nobel Prize in Chemistry in 1990 for his work developing the theory of organic synthesis |
| SEABORG | Scientist who shared the 1951 Nobel Prize in Chemistry for involvement in the discovery and investig |
| HODGKIN | Dorothy ---, English chemist and crystallographer who won the Nobel Prize in Chemistry in 1964 (7) |
| ZIEGLER | Karl, organic chemist and co-winner of Nobel Prize in Chemistry in 1963 (7) |
| FLASHPOINT | In chemistry, term for the lowest temperature at which a compound gives off sufficient vapour to ignite in air (10) |
| INITIATOR | In chemistry, a substance that starts a chain reaction (9) |
| FRANCESARNOLD | First American woman to win the Nobel Prize in Chemistry in 2018: 2 wds. |
| ARGENTIC | In chemistry, of or containing silver in the divalent or trivalent state |
| BERG | Paul ---, US biochemist awarded the Nobel Prize in Chemistry in 1980 (4) |
| BASE | In chemistry, any compound that reacts with an acid to form a salt, or dissolves in water to form hydroxide ions (4) |
