| 100% | IONS | 4 | + and - particles |
| 85% | DUSTING | 7 | Removing fluff and particles from surfaces at home |
| 83% | MESONS | 6 | B particles and D particles |
| 81% | ATOM | 4 | Particle with protons and electrons |
| 81% | ATOM | 4 | Particle with electrons and neutrons |
| 80% | GRUS | 4 | Accumulation of sand and gravel particles |
| 79% | ATOM | 4 | Particle with a proton and electron |
| 79% | SPARK | 5 | Particle flung from flint and steel |
| 78% | COLLOID | 7 | Mixture of a liquid and tiny particles |
| 76% | UREA | 4 | Common resin component CO(NH2)2, used in adhesives and particle board |
| 75% | MESON | 5 | Particle composed of a quark and an antiquark |
| 75% | ATOM | 4 | Particle made up of protons, neutrons, and electrons |
| 74% | ATOM | 4 | Small particle with protons and electrons |
| 72% | ATOM | 4 | Tiny particle with protons, electrons, and neutrons |
| 72% | QUARK | 5 | A subatomic particle and a ferengi bartender |
| 71% | PROTONS | 7 | Particles composed of two up quarks and one down quark |
| 67% | KAONS | 5 | Particles consisting of a strange quark and an up or down antiquark |
| 64% | QUARK | 5 | Particle that comes in six "flavors" — up, down, top, bottom, charm and strange |
| 64% | LIGHT | 5 | It's both a particle and a wave, in quantum theory |
| 58% | QUARK | 5 | Particle whose six flavors form the starts of 16-, 23-, 35-, 37-, 46-, and 57-Across |
| 57% | NANO | 4 | Prefix for "particle" and "second" |
| 55% | OATS | 4 | Stable particles |
| 55% | TAUS | 4 | Elementary particles |
| 55% | IONS | 4 | Charged particles |
| 55% | ANIONS | 6 | Negative particles |
| 55% | IONS | 4 | Physics particles |
| 55% | ASH | 3 | Volcanic particles |
| 55% | ANIONS | 6 | Charged particles |
| 55% | NEUTRINOS | 9 | Elementary particles |