| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| Swimming pools have been cleaner since Herbert Dow developed a method of getting this element from brine in the 1890s | chlorine | $800 | DJ | SCIENTIFIC CANADIAN | 2022-04-15 | #8620 | |
| When Carl Scheele discovered this element found in salt, he called it "dephlogisticated muriatic acid" | chlorine | $600 | J | SCIENTIFIC DISCOVERIES | 2021-01-13 | #8313 |