Ananth puzzles

12345678910
Across
  1. 3. This gas comes out of a volcano or close to tectonic plates
  2. 5. A word that is keep trying in science
  3. 7. most used thing in science
  4. 9. after something good you have done you get Hope Used for everything that is new
  5. 10. A subject in science
Down
  1. 1. This happen after a building failure
  2. 2. a cleaning substance
  3. 4. Another word for exam
  4. 6. happens before just when the experiment is going
  5. 8. after a success in something