| PERIODIC | - - - table, list of elements (8) |
| PERIODICTABLE | List of elements arranged by atomic number (8,5) |
| SIXTEENTH | sulfur, in list of elements |
| MATRICES | Arrays of elements redefined as metric (8) |
| EMULSIFY | File my US novel and convert a number of elements into something saucy (8) |
| ISOTOPES | One getting distress call about Kitty picking up energy produced by radioactive type of elements (8) |
| COMPOUND | Mixture of elements in open area enclosed by a fence (8) |
| DAVYLAMP | Miner's safety device invented by the discoverer of elements including barium, magnesium and potassium (4,4) |
| MENDELEYEV | Creator of the periodic table of elements |
| NEON | One of the inert gases on the periodic table of elements |
| FIRE | A principle/state of combustion requiring the interaction of a "triangle" of elements comprising fuel, heat and oxygen; or, ardour, fervour or other "burning" emotion (4) |
| TEMPER | From "to mingle", a word for a correct or due mixture of elements originally, later for mental balance; frame of mind; or, a fit of ill-humour (6) |
| CHEMICALTABLE | Periodic table of elements |
| ARGON | Ar on table of elements |
| SUBSPACES | Contained lots of elements of abscess up for treatment |
| ATOMICNUMBER | Unique identifier displayed in the periodic table of elements |
| NICAD | Type of battery named for a pair of elements |
| EULER | Swiss author of "Elements of Algebra" |
| HALOGEN | Any of a highly reactive group of elements (7) |
| TIN | Sn, on the periodic table of elements |
