Across
- 2. atomic _______ determines the type of element
- 4. ___________ energy is the energy of motion
- 6. a _______ particle is a helium nucleus
- 8. _________ is a mass on a string that swings
- 10. _______ is the unit we use to measure distance
- 15. ___________ energy is based on your height
- 16. _______ is the lightest element
- 18. subatomic particle with no charge
- 19. negatively charged subatomic particle
- 20. different version of element based on a different number of neutrons
Down
- 1. The unit for FORCE
- 3. Changing velocity is ____________
- 5. atomic _____ is the number of protons plus neutrons
- 7. _______ is the unit we use to measure time
- 9. mass times velocity equals ________
- 11. An object's speed and direction is its _______
- 12. we measure mass in the unit of ________
- 13. an educated guess
- 14. positive particle in the nucleus of an atom
- 17. __________ have a magnitude and direction