-
Dalton
Dalton believed that things could be broken down and that atoms are things made up of mass and properties. -
Thomson
Thomson is responsible for the discovery of electrons and he also discovered that electrons are smaller than atoms and that they are the smallest particle in the atom. He pictured atoms lke a blueberry muffin, called the plum pudding model. -
Democritus (BC)
he claimed that everything is made up of atoms.
Iron atoms are solid and strong, water atoms are soft and slippery, salt atoms, because of taste.
Named the iron, salt, and water atoms the democritus atoms.
27, Feb 400. Democritus atom (BC) -
Bohr (1912, 1913)
27 Feb. 1912, 1913, BohrExperienced that Rutherford's model wasn't quite right
He used the "plum pudding" experiment.
He discovered the atom was an electron and has a negative charge. -
Heisenberg (1926)
27 Feb. Heisenberg (1926)Built off of Bohr's model of the atom with the electron cloud model.
Used a "Standing waves" model
The atoms were electron -
Schrodinger (1927)
27 Feb Schrodinger (1927)Determined that the only way to describe the electron location is through probability distribution.
Used the quantum model
Named the model The Schrodinger Equation -
Rutherford (1911)
27, Feb 2014 Rutherford (1911)
Discovered all protons in the nucleus and eletrons orbit around the nucleus like the solar system.
Used the "gold foil" experiment and alpha particles.
Thought the atom looked like the solar system. -
Aristotle(BC)
Aristotle believed everything was made out of the four elements: air, water, fire, and earth. He also discovered that it doesn't matter how many times you cut matter
