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an atom is the basic unit of a chemical element.

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What was the significance of Rutherford's experiment?

Rutherford's experiment, known as the gold foil experiment, led to the discovery of the atomic nucleus and the development of the nuclear model of the atom. This experiment provided evidence that most of the atom's mass and positive charge is concentrated in a small, dense nucleus at the center of the atom, with electrons orbiting around it. It revolutionized our understanding of atomic structure.


How did Thomson's discovery change Dalton's atomic theory?

Thomson discovered that atoms can be cut. He found this out while studying rays traveling between charged metal plates in a vacuum tube. He discovered that the rays were consisted of negatively charged particles. He had just discovered electrons. He discovered all of this on a trip from America. Since electrons are so small, he believed that they could only be from inside of the atom. Since Thomson's discovery of the electron, John Dalton's theory that atoms are indivisible had to be changed.


Who invented the proton?

Ernest Rutherford is generally credited with the discovery of the proton


Who discovered that there are small negatively charged particles inside an atom?

J.J. Thomson discovered the existence of small negatively charged particles, later named electrons, inside an atom through his cathode ray tube experiments in 1897. This discovery laid the foundation for the development of the atomic model.


What did Rutherford discover that Thomson did not understand?

That most of an atom's mass was packed in a central nucleus