Chemistry

1234567891011
Across
  1. 2. Who discovered the ozone hoke
  2. 4. one of the three rs
  3. 7. most used material in the world
  4. 9. who invented fractional distillation
  5. 10. slabs of iron
  6. 11. unsustainable resources
Down
  1. 1. Who discovered climate change
  2. 2. can be re used
  3. 3. one of the three rs
  4. 5. what cou try polluted the most
  5. 6. one of the three rs
  6. 8. what is the most reactive metal