| 100% | POISON | 6 | Toxic substance that Romeo used |
| 48% | BOTOX | 5 | Substance that's used to help erase frown lines |
| 45% | DNA | 3 | Genetic substance that may be used as evidence in court: Abbr. |
| 45% | LEAD | 4 | Toxic metal that used to be in house paint |
| 42% | AIRJACK | 7 | Device that uses a compressed substance to lift a car |
| 41% | GRAPHITE | 8 | A shiny black substance that is used in pencils |
| 39% | POISON | 6 | Toxic substance |
| 39% | VENIN | 5 | Toxic substance |
| 38% | FOAM | 4 | Memory ___, substance used to make mattresses and pillows that was originally developed by NASA |
| 37% | TAR | 3 | Toxic substance in cigarettes |
| 37% | ADULTERANT | 10 | Substance that decreases purity |
| 37% | EGGWHITES | 9 | Substance that surrounds yolks |
| 37% | LUBE | 4 | Substance that overcomes friction |
| 37% | ORE | 3 | Substance that's mined |
| 37% | ANTITOXIN | 9 | Substance that counteracts poison |
| 37% | EMETIC | 6 | Substance that causes vomiting |
| 37% | ORE | 3 | Substance that lacks refinement? |
| 37% | DISINFECTANT | 12 | Substance that destroys germs |
| 37% | SOLVENT | 7 | Substance that dissolves another |
| 37% | LODESTONE | 9 | Substance that's attractive |
| 37% | OXIDANTS | 8 | Substances that oxidize others |
| 37% | EPA | 3 | Group that enforces the Toxic Substances Control Act: Abbr. |
| 37% | EPA | 3 | Group that regulates the Toxic Substances Control Act: Abbr. |
| 36% | WAX | 3 | Substance that polishes linoleum floors |
| 36% | YEAST | 5 | Substance that makes bread rise |
| 36% | DYE | 3 | Substance that could color textiles |
| 36% | INDUCER | 7 | Substance that enhances enzyme production |
| 36% | ANTIGEN | 7 | Substance that stimulates antibody production |
| 36% | OIL | 3 | Substance that stains garage floors |
| 36% | OIL | 3 | Substance that fills some drums |