Across
- 2. The Roman's used this metal to make their pipes.
- 8. used in microelectronics.
- 10. element with the symbol Si.
- 13. we find this metal in the majority of our phone batteries.
- 14. ______dioxide is the gas that we breath out.
- 16. It is found in bananas Potassium
- 17. used in bright signs for advertising.
- 18. we need this to survive.
- 20. its added to our water to keep our teeth strong (not calcium).
- 21. Makes balloons float in the air.
- 22. makes up 80% of the air we breathe.
Down
- 1. Volcanoes produce this around the crater
- 3. Group 2 metal found in milk.
- 4. used on the top of matches.
- 5. A heavy nonreactive gas used in light bulbs.
- 6. light metal used in kitchen foil.
- 7. the latin name for this element is 'Stannum'.
- 9. a metal that when burnt glows brightly
- 11. element with the chemical symbol B.
- 12. used in catalytic converters.
- 14. a group 1 metal that reacts violently with water
- 15. Burns with a 'squeaky pop'.
- 19. Used to keep swimming pools hygienic