Across
- 4. system Open system
- 6. Energy
- 9. Salt
- 12. Chem reaction bewteen a base and an acid
- 13. agent Oxidising agent
- 18. Alkali
- 19. A natural resource that will run out
- 20. Stored energy is released
- 21. Substance loses oxygen
- 23. of conversation of mass Tocom
- 24. system Closed system
Down
- 1. Gives out energy change exo
- 2. Endothermic
- 3. Hydrogen and carbon
- 5. The natural effect
- 7. Rise in average wordl temps
- 8. Carbonate
- 10. Chemical reaction where a substance gains
- 11. Source that will not run out
- 14. A chemical reaction that is also known as burning
- 15. A chemical less than 7
- 16. Describes the product formed in the oxidation of fat
- 17. Base
- 22. dioxide Gas that form 0.04% of the air