| Hy | a colorless explosive liquid that is volatile and poisonous and foul-smelling |
|---|---|
| Hy | a nuclear weapon that releases atomic energy by union of light (hydrogen) nuclei at high temperatures to form helium |
| Hy | a chemical bond consisting of a hydrogen atom between two electronegative atoms (e.g., oxygen or nitrogen) with one side be a covalent bond and the other being an ionic bond |
| Hy | a colorless gas that yields hydrobromic acid in solution with water |
| Hy | a salt of carbonic acid in which one hydrogen atom has been replaced |
| Hy | a colorless corrosive gas: HCl |
| Hy | a weak poisonous acid (HCN) used in fumigating and in synthesis of organic compounds |
| Hy | a colorless poisonous corrosive liquid made by the action of sulphuric acid on calcium fluoride |
| Hy | a colorless gas that yields hydroiodic acid in aqueous solution |
| Hy | a positively charged atom of hydrogen |
| Hy | the number of moles of hydrogen ions per cubic decimeter |
| Hy | a viscous liquid with strong oxidizing properties |