Across
- 4. Equals the number of protons
- 5. 1 more electron than proton = (-) negative charge
- 6. 1 less electron than proton = (+) positive charge
- 8. have no electrical charge
- 10. often used for things that are too small or too large to be observed
Down
- 1. have a positive charge (+)
- 2. equal to the number of protons plus neutrons
- 3. Have a negative electrical charge (-)
- 7. Two atoms with different numbers of neutrons
- 9. An atom that carries an electrical charge