Scientists Crossword Robyn Warrington

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

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