What did Thompson think the atom looked like?

What did Thompson think the atom looked like?

In Thomson’s plum pudding model of the atom, the electrons were embedded in a uniform sphere of positive charge like blueberries stuck into a muffin. The positive matter was thought to be jelly- like or a thick soup.

What was JJ Thomson wrong about the atom?

Thomson suggested the atom’s plum pudding model, which had negatively charged electrons trapped in a “soup” filled with positive effects. Thomson was “wrong” because he assumed that the positive charge of an atom was all one uniform blob of matter with the electrons moving in orbits inside the nucleus.

What did JJ Thomson discover about the atom *?

Joseph John “J. J.” Thomson. In 1897 Thomson discovered the electron and then went on to propose a model for the structure of the atom. His work also led to the invention of the mass spectrograph.

What did Thomson get wrong?

Thomson’s atomic model failed to explain how the positive charge holds on the electrons inside the atom. It also failed to explain an atom’s stability. The theory did not mention anything about the nucleus of an atom. It was unable to explain the scattering experiment of Rutherford.

What did Rutherford think an atom looked like?

Physicist Ernest Rutherford envisioned the atom as a miniature solar system, with electrons orbiting around a massive nucleus, and as mostly empty space, with the nucleus occupying only a very small part of the atom.

What is JJ Thomson most famous for?

Thomson, in full Sir Joseph John Thomson, (born December 18, 1856, Cheetham Hill, near Manchester, England—died August 30, 1940, Cambridge, Cambridgeshire), English physicist who helped revolutionize the knowledge of atomic structure by his discovery of the electron (1897).

What experiment did JJ Thomson do to find out the atom?

As we mentioned previously, JJ Thomson performed some experiment in his laboratory to find out the true model of atom. In that period of time, some other scientists also conducted similar experiment using the cathode ray tube to understand the atom model. They did pass the electric current to the vacuum tube.

What were some inconsistency in JJ Thomson’s atomic theory and model?

There were some inconsistency in his atomic theory and his atomic model. JJ Thomson proposed the neutrality in the atom. He believed that the total mass in atom is uniform in all atom’s particles. However, this point was not entirely true as it showed the the different results from the experiments.

How did better laboratory tools help scientists in defining atom model?

With the help of better laboratory tools, scientists were able to conduct more detailed experiment in defining atom model. In 18977, J.J Thomson performed several experiments to examine the structure of atom using the cathode ray application. He did the study about electric discharge in high vacuum cathode ray tube.

How did Ernest Rutherford counter the atomic theory of Ernest Thompson?

After Thompson’s atomic theory, Ernest Rutherford, Thompson’s student, conducted the experiment which countered his teacher’s atomic theory. In 1911, he performed the experiment using the alpha particles. He shoot the alpha particle through the gold foil. This experiment resulted that most of the alpha particles passed through the gold foil.