Across
- 5. Hydrogen
- 6. different elements
- 8. latin derived
- 9. same element
- 10. positive
- 11. most common in the water
- 13. Makes up everything
- 14. shared electrons
- 16. periodic table
- 18. most common element
Down
- 1. most common in the air
- 2. right
- 3. exponents opposite
- 4. left
- 5. Micky mouse
- 7. 118 things on it
- 11. compound for ocean
- 12. protons and neutrons
- 15. what we breathe
- 16. I think I lost a blank, in fact i'm positive
- 17. part of nucleus