Elements

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Across
  1. 5. atomic number 100
  2. 6. used to power cars back in the 19s
  3. 7. very expansive
  4. 9. the best heats conductor
  5. 11. named after a planet
  6. 12. a common crystal
  7. 14. really small pebbles
Down
  1. 1. put on a ring
  2. 2. It’s more radioactive than uranium
  3. 3. something that turns into Sapphire after many many years
  4. 4. will turn drown to green after a while
  5. 8. stuff you breath
  6. 10. green ore
  7. 13. used for pipes