| Rating | Solver | Clue |
|---|---|---|
| OXIDE | Oxygen group | |
| HYDROXYL | A compound radical, or unsaturated group, HO, consisting of one atom of hydrogen and one of oxygen. It is a characteristic part of the hydrates, the alcohols, the oxygen acids, etc. | |
| CALCIUM | An elementary substance; a metal which combined with oxygen forms lime. It is of a pale yellow color, tenacious, and malleable. It is a member ... | |
| CARBOHYDRATE | ... starches, and gums, which contain six (or some multiple of six) carbon atoms, united with a variable number of hydrogen and oxygen atoms, but ... | |
| MOLECULE | ...r consists of two atoms of hydrogen and one of oxygen. Cf. Atom. ... | |
| PHOSPHORUS | ...must be preserved under water, and unites with oxygen even at ordinary temperatures, giving a faint glow, -- whence its name. It always occurs ... | |