Across
- 4. molecules in which atoms share outer shells
- 6. positive charge
- 8. Smallest particle that still retains special properties
- 9. same # of protons and electrons, varies in neutrons
- 12. amount of protons
- 13. H20
- 15. DNA
- 16. 2 or more atoms or molecules combine to form a larger complex molecule
Down
- 1. change that does not alter basic nature of a substance
- 2. energy in motion
- 3. building blocks of protein
- 4. 2 or more different atoms bind together to form a molecule
- 5. uncharged or neutral
- 7. atoms outermost shell
- 10. speeds up a reaction
- 11. 2 or more atoms chemically combined
- 14. anything that occupies space and has mass