Across
- 2. divided matter into four (five) elements: earth, air, water, fire, and cosmos(ether)
- 4. classified and sorted elements based on common chemical properties
- 5. first elementary particle to be discovered
- 8. Chadwick discovered new particle that he called neutron
Down
- 1. found nucleus in the atom
- 3. supported the idea that atoms were "indivisible"
- 6. charge is neutral and is roughly the same mass as the proton
- 7. comes from Greek word "a-tomos"
- 8. Thomson experimented with "neutral" cathode rays