Elements, Compound Structure, Periodic Table

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