Across
- 2. Subatomic particle with no charge
- 5. The 18 columns in a periodic table are known as
- 6. Reactions that absorb energy through heat
- 7. Subatomic particle with positive charge
- 8. Reactions that release energy through heat
- 9. Subatomic particle with negative charge
Down
- 1. When a solid changes into a liquid
- 3. The 7 rows in a periodic table are known as
- 4. When a liquid changes into a solid