Across
- 2. Used in explosives
- 4. Commonly referred to as salt
- 6. has an atomic weight of 10.81
- 8. Released by the burning of fossil fuels
- 10. Element symbol "Au"
- 11. First element of the periodic table
- 12. Chemical symbol "Ag"
Down
- 1. The compound formed when hydrogen and oxygen mis
- 3. Added to water in Australia to strengthen teeth
- 5. The last element in the periodic table
- 7. Used in lighting
- 9. The element that we inhale through breathing