Across
- 4. What element is often found in public pools?
- 7. What element is the Earth's most abundant metal?
- 10. What element has 18 protons?
- 11. What element has the symbol S?
- 12. What element has the atomic number 12?
- 14. What element is found in bananas?
- 17. What is the lightest element?
- 18. What element is used to fill balloons?
- 19. What element do we need to breathe?
- 20. What element has an atomic mass of 10.81?
Down
- 1. What element has an atomic mass of 30.97376?
- 2. What element is used to season food?
- 3. What element has the symbol Be?
- 5. What element is found in bones?
- 6. What element has 3 protons?
- 8. What element has an atomic mass of 18.998?
- 9. What element are life forms based on?
- 13. What element makes up 78% of the Earth's atmosphere?
- 15. What element is found in sand?
- 16. What element has 10 protons?