Ernest Rutherford
Published on Nov 24, 2015
No Description
MORE DECKS TO EXPLORE
PRESENTATION OUTLINE
Ernest Rutherford
Discoveries Relating to Atoms and the Nucleus
accomplishments
- Discovered alpha and beta rays
- Set forth the laws of radioactive decay
- Identified alpha particles as helium nuclei
- Postulated the nuclear structure of the atom
SLIDE 1:
Most important, he postulated the nuclear structure of the atom: experiments done in Rutherford's laboratory showed that when alpha particles are fired into gas atoms, a few are violently deflected, which implies a dense, positively charged central region containing most of the atomic mass.
Most important, he postulated the nuclear structure of the atom: experiments done in Rutherford's laboratory showed that when alpha particles are fired into gas atoms, a few are violently deflected, which implies a dense, positively charged central region containing most of the atomic mass.
Atoms/Nucleus
- Created theories about atoms
- Gold Foil Expirament
Ernest publishes his atomic theory describing the atom as having a central positive nucleus surrounded by negative orbiting electrons.
This model suggested that most of the mass of the atom was contained in the small nucleus, and that the rest of the atom was mostly empty space.
Rutherford came to this conclusion following the results of his famous gold foil experiment. This experiment involved the firing of radioactive particles through minutely thin metal foils (notably gold) and detecting them using screens coated with zinc sulfide (a scintillator).
This model suggested that most of the mass of the atom was contained in the small nucleus, and that the rest of the atom was mostly empty space.
Rutherford came to this conclusion following the results of his famous gold foil experiment. This experiment involved the firing of radioactive particles through minutely thin metal foils (notably gold) and detecting them using screens coated with zinc sulfide (a scintillator).
