| Answer | Crossword Clue |
|---|---|
| BASE | It's high on the pH scale |
| ACID | It's below 7 on the pH scale |
| ACID | Anything below 7 on the pH scale |
| NONBASIC | 7 or below on the pH scale |
| ACIDS | Lemon juice and coffee, on the pH scale |
| HARD | High on the Mohs scale |
| HARD | High on the Mohs' scale |
| SPICY | High on the Scoville scale |
| HARD | High up on the Mohs scale |
| HARD | Somewhat high on the Mohs' scale |
| GALES | They rate high on the Beaufort scale |
