| Italian volcano |
| Hair stylists' substances |
| Pixar short about two volcanoes in love screened before "Inside Out |
| Chem lab substances |
| Substances that ooze out |
| Active volcano |
| ___ acid (substance that turns turmeric paper reddish-brown) |
| Drop of thick liquid or viscous substance |
| Pearly substance |
| Took substance |
| Gummy, sticky substances |
| Rubbery Nickelodeon toy substance of the 1990s |
| Adhesive substance |
| Atoll substance |
| Active Sicilian volcano |
| Active volcano in Sicily |
| Gummy substances |
| Gummy, messy substances |
| Active Alaskan volcano |
| Active Ecuadorean volcano whose name means "Smooth neck of the moon |
| Messenger" substance |
| Organization that enforces the Controlled Substances Act: Abbr. |
| Simple substances split in eight long answers in this puzzle |
| Accumulate on a surface, as a dissolved substance |
| He answered "Yes" when Oprah asked him "In all seven of your Tour de France victories, did you ever take banned substances or blood-dope? |
| Abrasive substances |
| Substances in candy coatings |
| Secret (and potentially cataclysmic) substance in Kurt Vonnegut's "Cat's Cradle |
| Modeling substances |
| Andean volcano, the world's second-largest |