| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| In 1923 Bronsted & Lowry figured out that these substances donate protons to bases | acids DD | $4,000 | DJ | CHEMISTRY | 2002-06-12 | #4108 | |
| Use the dye from boiled red cabbage to tell alkalis apart from these, like lemon juice | acids | $800 | J | CHEMISTRY EXPERIMENTS | 2002-05-29 | #4098 | |
| Among these, nitric & hydrochloric are "strong", meaning they ionize readily in water | acids | $200 | DJ | CHEMISTRY | 2000-04-25 | #3612 | |
| Some examples are gallic, malic, & lactic | acids | $200 | DJ | CHEMISTRY | 1987-02-23 | #576 |