Periodic Table

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1234567
Across
  1. 3. A highly flammable gas
  2. 5. a train driver
  3. 6. a reflecting light
  4. 7. Chemist use it to keep chemicals organized
Down
  1. 1. Ancient languages have this in them
  2. 2. To think something but don't know if its true
  3. 4. Fool