Across
- 2. pioneering theory of atomism. He also developed methods to calculate atomic weights and structures and formulated the law of partial pressures
- 4. discovered that a magnetic coil could be used as a lens for electron beams and developed the first electron microscope in 1933
- 8. proposed a theory for the hydrogen atom, based on quantum theory that some physical quantities only take discrete values
- 10. American, Nobel Prize-winning physicist, credited with the discovering the value for electron charge, e, through the famous oil drop experiment
- 11. postulated the nuclear structure of the atom, discovered alpha and beta rays, and proposed the laws of radioactive decay
Down
- 1. best known for his discovery of the neutron in 1932
- 3. protons with the experiments he did with cathode rays which would knock electrons of atoms and attract them to a positively charged electrode.
- 5. invented the electron microscope in 1931.
- 6. experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons and proposed the plum pudding model of the atom
- 7. theorized that all material bodies are made up of indivisibly small “atoms.”
- 9. British chemist and physicist noted for his discovery of the element thallium and for his cathode-ray studies