periodic table

123456789
Across
  1. 2. the only elemental metal that is liquid at room temperature
  2. 3. you breath it
  3. 6. as strong as steel but much less dence
  4. 8. naturally antibactirial
  5. 9. the most common state of matter in the universe
Down
  1. 1. 80% of the Earth's inner and outer cores
  2. 2. the 8th most abdunt element
  3. 4. The discovery of lead is not attributed to any single human
  4. 5. conducts heat and electricity
  5. 7. helps cells to transmit nerve signals