Across
- 1. sum of heat values
- 4. one substance changes into two or more other substances
- 7. the process of burning something
- 9. a substance produced
- 11. a substance that takes undergoes change during a reaction
- 13. average
- 14. occurring at the beginning
- 15. alter or modify
- 16. energy unit
- 18. outer heat flow
- 19. maximum amount
Down
- 2. inner heat flow
- 3. area around
- 5. quantities of heat absorbed during chemical reactions
- 6. occurring continuously
- 8. clearly defined
- 10. the action of forming
- 12. coming at the end
- 15. heat values
- 17. heat content