Across
- 5. H2O is an example of a chemical ____________
- 7. gasses this group on the periodic table has a full outer shell
- 8. energy of motion
- 10. Newtons __________ law. F=ma
- 11. the speed of something in a given direction
- 12. particle with no charge
- 13. negatively charged particle that orbits the nucleus
- 15. stored energy
- 17. a tendency to do nothing or remain unchanged (1st law)
- 19. warm ocean currents originate here
- 21. _________= distance / time
Down
- 1. _________= mass / volume
- 2. positively charged particle
- 3. electron determines the atoms reactivity
- 4. a push or a pull on an object
- 6. an object that is acted on by unbalanced forces will ___________________________.
- 9. this group on the periodic table has 7 valence electrons
- 14. color change is an example of a _____________ reaction
- 16. for every action, there is an equal and opposite reaction. Newtons __________ law.
- 18. atoms that are in the same ________ will behave similarly
- 20. warmer air rises because it is _______ dense than cooler air