Flashcards
atomic time line
Flashcards do conjunto (7)
- 1DemocritusHe said that the atoms were very tiny, hard, and can’t be cut- 400-300 BC
- 2Jhon DaltonHis model of the atom is the billiard ball- atoms remain intact and can’t be destroyed. -1803-
- 3J.J ThompsonHe did the experiment of the cathode ray that consist of a ray that is attracted to positive charges. His model is the plum pudding- there must be electrical charges associated with matter -1897-
- 4Rutherfordhe did the experiment of the gold foil that is that various alpha particles were emitted onto the gold foil to prove that there is a center to atoms. His atomic model is the nuclear - all the positive matter that is in an atom must be small and centrally located -1909-
- 5Niels Bohrhis experiment was the hydrogen´s line spectrum that means that the atom only emit lines of color when energized, his atomic model was the planetary that means electrons only exist at certain distances from the nucleus-1915-
- 6SchrodingerHe said there was a probability to find electrons, the cloud is denser when the probability of finding electrons. -1926-
- 7Chadwickhe proposed that the nucleus has protons and neutrons, and the electrons surround the nucleus. He said this because he questioned how did the positive charges maintained united, so he figured out that there has to be something that attaches them, neutrons.
-1932-
Informações
- Descrição
- FlashCards sobre atomic time line, criado por ISABEL SOFIA MENDOZA URIBE em 31-10-2019.
- Criado por
- ISABEL SOFIA MENDOZA URIBE · out 2019
- Atualizado
- 5 nov 2019
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- 20
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