| 100% | MUONS | 5 | Particles with mass about 200 times that of electrons |
| 72% | PION | 4 | Particle with a mass about 270 times that of an electron |
| 39% | POSITRON | 8 | Elementary particle of antimatter with the same mass as an electron, but a positive charge |
| 37% | MESON | 5 | Particle with a diameter of about one femtometer |
| 36% | POSITRONS | 9 | Subatomic particles with the same mass as electrons |
| 36% | MUON | 4 | Subatomic particle with greater mass than an electron |
| 35% | NEUTRON | 7 | Uncharged elementary particle with a mass nearly equal to that of the proton |
| 33% | ODD | 3 | Roulette bet that wins about 47% of the time |
| 33% | APE | 3 | Animal that shares about 98% of its DNA with humans |
| 33% | ASIA | 4 | Area that takes up about 30% of Earth's land mass |
| 32% | MONTH | 5 | Period of time that lasts about one lunar cycle |
| 32% | MONTH | 5 | Unit of time that's hard to rhyme with |
| 32% | MUON | 4 | Subatomic particle similar to, but with a much greater mass than, an electron |
| 32% | MUON | 4 | Negatively charged particle that is two hundred times more massive than an electron |
| 31% | SUN | 3 | Its mass is 333,000 times that of Earth |
| 31% | ATOM | 4 | Particle with electrons |
| 31% | EON | 3 | James Bond production company that shares its name with a long period of time |
| 31% | EPSON | 5 | Company that began with the development of a printing timer for the 1964 Olympics |
| 31% | ABCS | 4 | Subject of a song that ends "Next time won't you sing with me?" |
| 31% | PHYSICS | 7 | That branch of science concerned with the study of the properties of space, time, matter and energy |
| 30% | DROPLEAFTABLE | 13 | Piece of furniture with parts that fold down, as depicted seven times in this puzzle |
| 30% | ABC | 3 | Start of a kids' song that ends "Next time won't you sing with me?" |
| 30% | EER | 3 | Stretch of time it takes to get to doomsday, to those with a poetical bent |
| 30% | PHOTON | 6 | Particle with zero mass |
| 30% | ATOM | 4 | Particle with protons and electrons |
| 30% | ATOM | 4 | Particle with electrons and neutrons |
| 30% | ATOM | 4 | Particle with an electron cloud |
| 30% | COIN | 4 | With 55-Down, actions that can be performed nine times in this puzzle without affecting any of the clues? |
| 29% | FOR | 3 | "___ the First Time," 2010 song by the Script that talks about "Drinking old cheap bottles of wine" |
| 29% | ATOM | 4 | Particle with a proton and electron |