| Answer | Crossword Clue |
|---|---|
| diatomic | containing two replaceable atoms or groups; binary |
| dibasic | containing two replaceable or ionizable hydrogen atoms |
| siloxane | any of various compounds containing alternate silicon and oxygen atoms in either a linear or cyclic arrangement usually with one or two organic groups attached to each silicon atom |
| tribasic | (of an acid) having three atoms of hydrogen replaceable by basic atoms or groups |
| tribasic | containing three atoms or groups, each having a valence of one, as tribasic sodium phosphate, Na3PO4 |
| quaternary | Denoting an ammonium compound containing a cation of the form NR4+, where R represents organic groups or atoms other than hydrogen |
