atom timeline / 07.03.20

Timeline created by kara_uwu
  • dalton's solid sphere model

    dalton's solid sphere model
    the solid sphere model is the first atomic model and it was developed by john dalton. he hypothesized that an atom is a solid sphere that could not be divided into smaller particles.
  • thomson's plum pudding model

    thomson's plum pudding model
    j.j. thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles (aka electrons). thomson proposed the plum pudding model, which had electrons within a positively-charged "soup."
  • rutherford's nuclear model

    rutherford's nuclear model
    developed by ernest rutherford, the nuclear model shows that an atom is mostly empty space, with electrons orbiting a fixed, positively charged nucleus in set, predictable paths.
  • bohr's planetary model

    bohr's planetary model
    in bohr's model, electrons travel in defined circular orbits around the nucleus. electrons can jump from one orbit to another by emitting or absorbing energy.
  • schrodinger's quantum mechanics model

    schrodinger's quantum mechanics model
    schrodinger used mathematical equations to describe the likelihood of finding an electron in a certain position. this atomic model is known as the quantum mechanics model of the atom.