Across
- 2. A fuel often used in BBQ gas bottles
- 4. Powder left after something burns
- 5. A compound made of hydrogen and carbon
- 7. The visible glowing part of a fire
- 9. The main gas found in natural gas
- 10. The gas needed for burning to happen
- 13. A very fast combustion reaction
- 16. A chemical reaction that releases heat and light
- 17. A substance that burns to release energy
- 18. A product formed when hydrocarbons burn
Down
- 1. A gas produced when fuels burn completely
- 3. What combustion reactions release
- 6. Substances present before a reaction starts
- 8. The process of starting a fire
- 11. Energy released during combustion
- 12. Tiny particles and gases released by fire
- 14. Substances formed after a reaction
- 15. Black carbon particles from incomplete burning