Across
- 2. this gas is needed for life processes
- 3. element number 4 in the Periodic Table
- 5. used to clean pools and floors
- 7. makes up most of the atmosphere
- 9. used to make planes and foil
- 10. Na na na na na!
- 12. the lightest element
- 14. this exists in a white and a red form
- 16. needed for strong bones and teeth
- 17. the third element in the Periodic Table
Down
- 1. used to fill gas balloons
- 3. this element sounds like the word "boring"
- 4. an element found in sand
- 6. this gas is used to make glowing signs
- 8. found in toothpaste
- 9. another inert gas, the 18th element
- 11. element number 12 in the Periodic Table
- 13. found in bananas
- 15. yellow element with a strong smell
- 16. this element makes up diamonds and graphite