Discovery of Subatomic Particles and Early Atomic Models
How scientists gradually discovered that the atom is not indivisible after all.
Subatomic Particles
| Particle | Charge | Discovered By |
|---|---|---|
| Electron | Negative | J.J. Thomson |
| Proton | Positive | E. Goldstein |
| Neutron | Neutral | James Chadwick |
Rutherford's Model
Rutherford's gold-foil experiment revealed that an atom has a tiny, dense, positively charged nucleus, with electrons revolving around it.
Lesson 4 of 26