| CHEMISTRY | Science of atoms and molecules (9) |
| NIELSBOHR | 1922 Nobel physics laureate, for work on “the structure of atoms and [...] the radiation emanating from them” |
| TAUTOMER | Either of two or more isomers of a chemical compound existing together in equilibrium and interconvertible by migration of atoms and bonds (8) |
| CHEMISTS | Scientists investigating properties of matter including atoms and molecules (8) |
| NANOTECHNOLOGY | Manipulation of individual atoms and molecules (14) |
| ELECTRONS | Found in the nuclei of all atoms and discovered by J. J. Thomson, the lightest stable subatomic particles known (9) |
| MOLECULAR | Second cure-all made up of groups of atoms (9) |
| TRICYCLIC | Of a chemical compound, having three interconnected rings of atoms in its molecular structure (9) |
| AVUNCULAR | Benign source of atoms, very dim, emitting energy with introduction of uranium (9) |
| MOLECULES | Bonded groups of atoms (9) |
| MECHANICS | Acquaints men, chum, with the theory of atoms (7,9) |
| ISOMERISM | Property of having the same formula but a different arrangement of atoms |
| PHYSICIST | Person calculating volumes of atoms |
| IMITATION | A copy of atom in it one can make (9) |
| WATER | Molecule of two hydrogen atoms and one oxygen |
| LONGCHAIN | Lengthy string of atoms removed from nag in loch! (4-5) |
| FLUORESCENT | Having property of emitting light from excited atoms (and used in lamps) (11) |
| PHOTON | What is both part of an atom and a Malaysian make of car? (6) |
| TOM | Split the atoms and disturb a cat |
| BROWNIAN | ___ motion, irregular oscillatory movement observed in microscopic particles and molecules suspended in fluid (8) |
