| Answer | Crossword Clue |
|---|---|
| NITRIFY | Treat with element 7 |
| indium | a rare soft silvery metallic element associated with zinc ores: used in alloys, electronics, and electroplating. Symbol: In; atomic no: 49; atomic wt: 114.82; valency: 1, 2, or 3; relative density: 7.31; melting pt: 156.63°C; boiling pt: 2073°C |
| HERSHEYKISS | Nickname of the treat with its 100th anniversary on July 7, 2007 |
| IODIZE | Treat with element 53 |
| OXYGENATE | Treat with a chemical element. |
| sulfur | a non metallic element / to treat with sulfur, also SULPHUR |
| sulphur | a non metallic element / to treat with sulphur, also SULFUR |
