# data[].attributes.body
He discovered electrons. Thomson was not totally correct, but he was more correct than Dalton.

# data[].attributes.body
Source: Boundless. “The Thomson Model.” Boundless Physics. Boundless, 26 May. 2016. Retrieved 16 Sep. 2016

"Thomson Atomic Model." Encyclopedia Britannica Online. Encyclopedia Britannica, 6 Feb. 2015. Web. 16 Sept. 2016.

"Joseph John "J.J" Thomson." Https://www.chemheritage.org/historical-profile/joseph-john-%E2%80%9Cj-j%E2%80%9D-thomson. Chemical Heritage Foundation, 22 July 2015. Web. 16 Sept. 2016.

# data[].attributes.body
Dalton's model was very simple. Thomson made his new model more intricate and detailed.
slideplayer.com

# data[].attributes.body
This is an image of Thomson.

# data[].attributes.body
Thomson discovered the electron in 1897 and proposed the plum pudding model of the atom in 1904 before the discovery of the atomic nucleus.

He wanted to include the electron in the atomic model. In his model, the atom is composed of electrons (he called them "corpuscles")

# data[].attributes.headline
What did Thomson's Model look like?

# data[].attributes.subject
What did Thomson's Model look like?

# data[].attributes.body
The atom is made of electrons that are surrounded by a group of positive charged electrons by a group of positive charges to balance the electrons negative charges. This is like negatively charged plums that are surrounded by positively charged pudding.

# data[].attributes.headline
How is Thomson's Model different from Dalton's Model?

# data[].attributes.subject
How is Thomson's Model different from Dalton's Model?

# data[].attributes.body
"Dalton's model explained that atoms were tiny invisibly, indestructible particles; And that each had a certain mass, size, and chemical behavior that determined by what kind of element they were."

Dalton thought that atoms looked like billiard balls from pool.

J.J Thomson's atomic model was different because it was a sphere embedded with electrons. The sphere had positive charges throughout it.

The negatively charged particles were also scattered across this model.