Across
- 3. Positive subatomic particle.
- 4. Group 7 in the periodic table, more reactive at the top of the group.
- 6. A molecule made up of two atoms.
- 7. Negative subatomic particle.
- 9. Two or more different atoms chemically bonded.
- 10. gases Group 0 in the periodic table, very unreactive.
- 11. Made up of only one type of atom.
Down
- 1. Group 1 in the periodic table, very reactive.
- 2. Regular arrangement of closely packed oppositely charged ions.
- 5. Two or more atoms chemically bonded.
- 8. Neutral subatomic particle.