Across
- 4. an action performed or a feeling experienced in response to a situation or event
- 6. relating to chemistry, or the interactions of substances as studied in chemistry
- 9. the quality of being hot; high temperature
- 10. the process of burning something
- 12. the heating of an organic material, such as biomass, in the absence of oxygen
- 14. a thorough or dramatic change in form or appearance
- 16. the destruction of something, especially waste material, by burning
- 18. burning very fiercely
- 19. a technological process that can convert any carbonaceous (carbon-based) raw material such as coal into fuel gas
- 20. the action of setting something on fire or starting to burn
Down
- 1. a colorless, odorless, highly flammable gas, the chemical element of atomic number 1
- 2. easily combustible small sticks or twigs used for starting a fire
- 3. a machine with moving parts that converts power into motion
- 5. the strength and vitality required for sustained physical or mental activity
- 7. consume by fire
- 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
- 11. A chemical reaction that takes place when a substance comes into contact with oxygen or another oxidizing substance
- 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)
- 15. material such as coal, gas, or oil that is burned to produce heat or power
- 17. reciprocal action or influence