Across
- 3. The H element on the periodic table
- 8. 2 or more elements combined
- 9. the C element on the periodic table
- 10. smallest known matter
Down
- 1. water
- 2. hydrogen and a carbon
- 4. molecule with a specific ratio that is always the same
- 5. salts atomic formula
- 6. the number in front of a variable
- 7. an atom with a specific amount of protons and can't be broken down beyond the singular atom