Across
- 4. what goes into a chemical reaction
- 7. attachment
- 8. component
- 9. has low melting and boiling points
- 12. found in the cell nucleus
- 14. Fe
- 15. weak and easily broken
- 16. barrier
- 18. speed up a reaction
- 19. blood vessels
Down
- 1. atoms; negatively or positively charged
- 2. H20 when water molecules interact less with each other.
- 3. connecting
- 5. maintaining a stable_____ is very important for your health.
- 6. stable
- 10. released energy
- 11. absorbed
- 13. speed up metabolism
- 17. study of organisms
- 20. nucleic acid