Across
- 3. atom with a different number of electrons
- 4. performed the gold foil experiment
- 5. subatomic particle with a negative charge
- 7. subatomic particle with neutral charge
Down
- 1. subatomic particle with a positive charge
- 2. discovered the neutron
- 3. atom with a different number or neutrons
- 6. discovered the electron; plum pudding model