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John Dalton
In the early 1800's John Dalton discovered that everything was made up of atoms. He didn't know about the properties of atoms or what they looked like. He thought it was a sphere. -
JJ Thomson
In 1897, JJ Thomson made his discovery of electrons. He did not yet know about nucleus's or neutrons. He believed the atom was a sphere full of electrons and a spherical cloud of positive charge. -
Ernest Rutherford
In 1909, Ernest Rutherford discovered the nucleus. This was a big discovery in furthering knowledge of the atom. He believed that the postively charged particles were in the nucleus, while the negatively charged particles were outside of the nucleus. -
Niels Bohr
In 1913, Niels Bohr made the discovery that electrons orbit the nucleus. Before this discovery scientists were not sure where the electrons were located or what they did. -
Louis De Brogile
Louis de Brogile proposed that electrons moved in a wavy manner around the nucleus of the atom. This helped scientists further understand the atom. -
Werner Heisenberg
Werner Heisenberg discovered the behavior of electorns. This helped further understand electrons . -
Erwin Schrödinger
Erwin Schrödinger helped discover the wave function where electrons don't go in a straight path but they go in a wave pattern. -
James Chadwick
James Chadwick discovered that there wasn't just positive and negatively charged particles in atoms, and that their were neutral particles. They are called neutrons.
