| 100% | NONBASIC | 8 | 7 or below on the pH scale |
| 72% | ACID | 4 | Anything below 7 on the pH scale |
| 72% | ACIDS | 5 | Substances below 7 on the pH scale |
| 67% | ACID | 4 | It's below 7 on the pH scale |
| 56% | BASIC | 5 | >7 on the pH scale |
| 55% | BASE | 4 | It's high on the pH scale |
| 55% | FOURTEEN | 8 | Highest whole number on the pH scale |
| 55% | ACIDS | 5 | Opposite of alkalis on the pH scale |
| 54% | ONE | 3 | Gastric acid, on the pH scale |
| 54% | BASE | 4 | It's greater than 7 on the pH scale |
| 54% | ACIDS | 5 | Counterparts of bases, on the pH scale |
| 53% | ACIDS | 5 | Liquids low on the pH scale |
| 52% | ACIDS | 5 | Lemon juice and coffee, on the pH scale |
| 52% | ACIDS | 5 | Coffee and lime juice, on the pH scale |
| 52% | ACIDS | 5 | Coffee and Coca-Cola, on the pH scale |
| 50% | ACID | 4 | Substance registering between 1 and 6 on the pH scale |
| 49% | GALE | 4 | Eight or nine on the Beaufort scale |
| 48% | NEARGALE | 8 | 7 on the Beaufort scale |
| 48% | QUARTZ | 6 | 7 on the Mohs scale |
| 46% | TREMOR | 6 | 2 or 3 on the Richter scale, maybe |
| 40% | PHS | 3 | Acidity or alkalinity measures on the litmus scale |
| 40% | GLISSANDO | 9 | Quick uninterrupted passage up or down the scale on a piano or harp |
| 39% | STAR | 4 | Symbol below the 7 on a phone and above the 8 on a keyboard |
| 39% | WHATCHAUPTO | 11 | "Anything fun on the agenda today?," or a hint to the starts of 3-, 7-, 21-, and 29-Down |
| 39% | TREMOR | 6 | 2 or 3, maybe, on the Richter scale |
| 39% | ACIDS | 5 | One side of the pH scale |
| 39% | ACIDS | 5 | One end of the pH scale |
| 38% | EONS | 4 | Largest units on the geologic time scale |
| 38% | TALC | 4 | Softest mineral on the Mohs hardness scale |
| 38% | GALE | 4 | 8 on the Beaufort wind force scale |