Across
- 2. Positively charged ion
- 3. Common solvent
- 5. Substance made of only one type of atom
- 6. gas, Group 18 elements (2 words)
- 9. The center of an atom
- 10. Negatively charged particle
- 12. Vertical column in the periodic table
- 13. A horizontal row in the periodic table
- 14. Common table salt formula
Down
- 1. Bond where electrons are shared
- 4. The smallest unit of an element
- 7. Type of reaction that absorbs heat
- 8. pH less than 7
- 10. Number, Number of protons in an atom (2 words)
- 11. Gas released during photosynthesis
- 12. Substance formed in a chemical reaction