| A | B |
|---|
| polyatomic | ions made of more than one atom |
| sodium sulfide | chemical name for the compound NaS |
| property of an ionic compound | form crystals with characteristic shapes |
| dissolved in water | form in which an ionic compound can conduct electricity |
| covalent bond | formed when two atoms share electrons |
| double bond | two pairs of electrons shared between two atoms |
| low melting point | property shared by most molecular compounds |
| polar | bond in which electrons are shared unequally |
