Combustion and Chemical Reaction

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Across
  1. 4. an action performed or a feeling experienced in response to a situation or event
  2. 6. relating to chemistry, or the interactions of substances as studied in chemistry
  3. 9. the quality of being hot; high temperature
  4. 10. the process of burning something
  5. 12. the heating of an organic material, such as biomass, in the absence of oxygen
  6. 14. a thorough or dramatic change in form or appearance
  7. 16. the destruction of something, especially waste material, by burning
  8. 18. burning very fiercely
  9. 19. a technological process that can convert any carbonaceous (carbon-based) raw material such as coal into fuel gas
  10. 20. the action of setting something on fire or starting to burn
Down
  1. 1. a colorless, odorless, highly flammable gas, the chemical element of atomic number 1
  2. 2. easily combustible small sticks or twigs used for starting a fire
  3. 3. a machine with moving parts that converts power into motion
  4. 5. the strength and vitality required for sustained physical or mental activity
  5. 7. consume by fire
  6. 8. the chemical element of atomic number 6, a nonmetal which has two main forms (diamond and graphite) and which also occurs in impure form in charcoal, soot, and coal
  7. 11. A chemical reaction that takes place when a substance comes into contact with oxygen or another oxidizing substance
  8. 13. a substance or matter in a state in which it will expand freely to fill the whole of a container, having no fixed shape (unlike a solid) and no fixed volume (unlike a liquid)
  9. 15. material such as coal, gas, or oil that is burned to produce heat or power
  10. 17. reciprocal action or influence