| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| We don't love this "L.A." when it makes our muscles burn during exercise | lactic acid | $1,200 | DJ | A LITTLE SCIENCE | 2018-07-18 | #7808 | |
| Produced by the fermentation of milk sugar, it's the acid that turns milk sour | lactic acid | $600 | DJ | SCIENCE | 1996-05-24 | #2715 | |
| Formed by bacterial fermentation, it's the acid that makes sour milk sour | lactic acid DD | $800 | J | SCIENCE | 1993-04-08 | #1989 |