| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| If your dentist likes you, he may give you this gas discovered by Joseph Priestley in 1772 | nitrous oxide (laughing gas) | $800 | J | SUCH GOOD CHEMISTRY | 2009-12-07 | #5806 | |
| Though people don't laugh under influence of this anesthetic, it's still called "laughing gas" | nitrous oxide | $500 | J | CHEMISTRY | 1985-04-22 | #161 |