Across
- 3. if the
- 5. speed
- 7. the energy
- 12. burning
- 13. carbohydrates
- 16. Reaction in which one element replaces another element within a compound
- 19. Gain of hydrogen by a substance during a chemical reaction
Down
- 1. __ mirror
- 2. Reaction in which heat is given out along with the products
- 4. screen
- 6. term
- 8. bb
- 9. the opening
- 10. a point
- 11. rear view
- 14. when we breathe
- 15. When
- 17. Insoluble
- 18. the
- 20. lactic acid