| EGOYAN | Canadian director Atom of "The Sweet Hereafter" (1997) |
| ATOMEGOYAN | Canadian director of "The Sweet Hereafter" |
| ARARAT | Mount in Armenia's coat of arms sharing the name of Canadian director Atom Egoyan's 2002 movie |
| AMMONIA | Colourless pungent gas composed of one atom of nitrogen bonded to three atoms of hydrogen, chiefly used in the manufacture of fertilisers and nitric acid (7) |
| ISOTOPE | As knowledge of nuclear physics increased this term was needed to describe an atom of the same element with a different number of neutrons |
| ATOM | 'The Sweet Hereafter' director Egoyan |
| LANTOS | Canadian film producer ("The Sweet Hereafter") |
| SARAHPOLLEY | She sang "Courage" for the film The Sweet Hereafter: 2 wds. |
| ISOTOPES | Soot pies turn out to be atoms of the same element with different atomic mass |
| SHAWNLEVY | Canadian director of films such as Cheaper by the Dozen and the Night at the Museum series (5,4) |
| NORMAN | Canadian director whose films include In the Heat of the Night, Fiddler on the Roof and Moonstruck (6,7) |
| JEWISON | Canadian director whose films include In the Heat of the Night, Fiddler on the Roof and Moonstruck (6,7) |
| SMASH | Break the first of the sweet potatoes (5) |
| TASTE | Judge the flavour of the sweet as terrible (5) |
| PYM | Surname of Barbara, author of The Sweet Dove Died (3) |
| AFTERS | In search of the first of the sweets for dessert (6) |
| EIGHTY | Number of electrons or protons in an atom of mercury (6) |
| MONOXIDE | Oxide containing just one atom of oxygen in the molecule (8) |
| NUCLEON | Part of an atom of gas probed by London university |
| OZONE | An allotrope of oxygen, made up of three atoms of oxygen (5) |
