Across
- 3. Has a pH more than 7
- 7. Negative Subatomic Particle
- 9. Centre of the atom
- 10. Made up of only carbon and hydrogen
- 11. Made up of more than one type of atom chemically bonded
Down
- 1. Has a pH less than 7
- 2. Made up of only one type of atom
- 4. A substance that burns to release energy
- 5. Positive Subatomic Particle
- 6. Has a pH of exactly 7
- 8. Neutral subatomic particle