Across
- 6. Table entry?
- 8. NaCl, familiarly
- 11. Tiny negative particle
- 13. Two or more elements joined
- 14. Suffix with chlor-
- 15. Chemist’s counting unit
Down
- 1. Atom with extra neutrons
- 2. Atomic variant
- 3. Outer electron count
- 4. Group of atoms bonded together
- 5. Outer electron count
- 7. It has mass and occupies space
- 9. What holds atoms together
- 10. Building block of the periodic table
- 12. Particle with a charge