| Chemical compound form | 22 |
| Chemical compound group | 23 |
| Chemical compound in "poppers" | 40 |
| Chemical compound or anagram for steer | 38 |
| Chemical compound resembling another one | 40 |
| Chemical compound suffix | 24 |
| Chemical compound: Abbr. | 24 |
| Chemical compound: comb. form | 29 |
| Chemical compound: Suffix | 25 |
| Chemical compounds | 18 |
| Chemical compounds in tea | 25 |
| Chemical compounds resembling others | 36 |
| Chemical conclusion | 19 |
| Chemical conjunction? | 21 |
| Chemical connection that involves a transfer of electrons | 57 |
| Chemical container | 18 |
| Chemical contaminant, for short | 31 |
| Chemical cousin | 15 |
| Chemical cousins | 16 |
| Chemical defense | 16 |
| Chemical designations | 21 |
| Chemical discovery of 1898 | 26 |
| Chemical dropper | 16 |
| Chemical dumping, e.g. | 22 |
| Chemical element | 16 |
| Chemical element #38 (also part of the name of a pre-Police Sting/Stewart Copeland band) | 89 |
| Chemical element linked to lung cancer | 38 |
| Chemical element with the shortest name | 39 |
| Chemical element with the symbol Fe | 35 |
| Chemical elements | 17 |
| Chemical ender | 14 |
| Chemical ending | 15 |
| Chemical ending or compound | 27 |
| Chemical endings | 16 |
| Chemical enzymes | 16 |
| Chemical esters | 15 |
| Chemical experiment substances | 30 |
| Chemical extractions | 20 |
| Chemical extracts | 17 |
| Chemical featured at some modern dispensaries | 45 |
| Chemical featured on a 1989 "60 Minutes" segment | 58 |
| Chemical find of 1943 | 21 |
| Chemical first used as a dye | 28 |
| Chemical flower? | 16 |
| Chemical formula for sodium hydroxide | 37 |
| Chemical found in rocket propellants | 36 |
| Chemical giant | 14 |
| Chemical group | 14 |
| Chemical group derived from benzene | 35 |
| Chemical group that includes sodium and lithium (with a hidden fruit) | 69 |
| Chemical hydrocarbon | 20 |
| Chemical in biodiesel factories | 31 |
| Chemical in drain cleaners | 26 |
| Chemical in Drano | 17 |
| Chemical in fertilizer | 22 |
| Chemical in nail-polish removers | 32 |
| Chemical in the dumbest diet ever? | 34 |
| Chemical initials | 17 |
| Chemical kin | 12 |
| Chemical leftovers | 18 |
| Chemical liquid | 15 |
| Chemical mixture | 16 |
| Chemical moment of truth | 24 |
| Chemical not made since 1995 | 28 |
| Chemical plant graffiti, perhaps | 32 |
| Chemical pollutant | 18 |
| Chemical pollutant, for short | 29 |
| Chemical powder | 15 |
| Chemical prefix | 15 |
| Chemical prefix? | 16 |
| Chemical prefixes | 17 |
| Chemical process also called hyperfiltration | 44 |
| Chemical protein | 16 |
| Chemical radical | 16 |
| Chemical radicals | 17 |
| Chemical reaction phenomenon, and what occurs in four symmetrical pairs of long answers in this puzzle | 102 |
| Chemical reaction portmanteau | 29 |
| Chemical reaction, part 1 | 25 |
| Chemical reaction, part 2 | 25 |
| Chemical reaction, part 3 | 25 |
| Chemical reaction, part 4 | 25 |
| Chemical relative | 17 |
| Chemical restricted by the Stockholm Convention | 47 |
| Chemical salt | 13 |
| Chemical salt in some black inks | 32 |
| Chemical salt in some inks | 26 |
| Chemical salts | 14 |
| Chemical snake | 14 |
| Chemical solid | 14 |
| Chemical solvent | 16 |
| Chemical sprayed on fruit until 1989 | 36 |
| Chemical sprayed on plants | 26 |
| Chemical starter | 16 |
| Chemical substance | 18 |
| Chemical substance that hastens aging | 37 |
| Chemical substance used in a darkroom | 37 |
| Chemical substances | 19 |
| Chemical suffix | 15 |
| Chemical suffix replaced by ide | 31 |
| Chemical suffixes | 17 |