| Answer | Crossword Clue |
|---|---|
| IONS | Atoms with + or - symbols |
| IONS | Atoms that have gained or lost electrons |
| RHOS | Symbols for reflectivity or resistivity |
| NOTATION | System of signs or symbols |
| JACKOLANTERNS | Symbols of trick-or-treat time. |
| REBUS | Pictures or symbols representing a word. |
