| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| It's the valence number of the oxygen atom in a molecule of water | 2 | $1,200 | DJ | CHEMISTRY | 2002-05-09 | #4084 | |
| The carbon dioxide molecule contains this many oxygen atoms | 2 | $800 | DJ | CHEMISTRY | 2002-01-04 | #3995 | |
| Minimum number of atoms in 1 molecule of a compound; for example, a molecule of table salt | 2 | $100 | J | CHEMISTRY | 1993-10-20 | #2098 |