Across
- 2. the outer most shell of an atom
- 6. the force that keeps electrons from colliding with protons
- 9. positive charged part of an atom
- 10. negatively charged parts of an atom
- 12. condition of being electrically negative or positive
- 13. when an atom gains or loses an electron
- 14. the opposition to the flow of electricity
- 16. electron orbits are called
- 17. opposites attract
Down
- 1. the rate at which electricity is transferred or transformed
- 3. the simplest form of matter
- 4. a device that produces electricity through a chemical reaction
- 5. part of an atom that has no charge
- 7. the building blocks of life
- 8. the difference in charge between two points
- 11. the center of an atom
- 15. the movement of charged carriers
