Atomic Theory Timeline by Sophia Nguyen-Renlund https://padlet.com/367813/decnkjc141a Sophia Nguyen-Renlund and Fatima Jafri en-us 2019-02-05 17:32:43 UTC 2026-01-30 15:24:33 UTC hello@padlet.com James Chadwick-1932 376216 https://padlet.com/367813/decnkjc141a/wish/327909686 Discovered the neutrino through his discovery that electrons are emitted in a continuous spectrum.
Discovered the neutron]]> 2019-02-05 17:38:00 UTC https://padlet.com/367813/decnkjc141a/wish/327909686 Democritus- 400 BC 367813 https://padlet.com/367813/decnkjc141a/wish/327909935 He proposed the concept that everything is made up of atoms.
Won the Nobel Prize in chemistry after his death in 1901 AD.]]> 2019-02-05 17:38:22 UTC https://padlet.com/367813/decnkjc141a/wish/327909935 Dalton- 1803 367813 https://padlet.com/367813/decnkjc141a/wish/327913153 Created the first atomic theory which he declared atoms as unique and that an atom is a single particle with no sub-particle.

He was a corresponding member of the French Academie des Sciences and he also got a fellowship to the Royal Society.]]> 2019-02-05 17:43:25 UTC https://padlet.com/367813/decnkjc141a/wish/327913153 Niels Bohr-1913 376216 https://padlet.com/367813/decnkjc141a/wish/327913346 Proposed the idea that electrons sit on different energy levels rather than orbiting the nucleus freely.

Won the Nobel Prize in Physics in 1922.

Won the Copley medal in 1938.]]> 2019-02-05 17:43:46 UTC https://padlet.com/367813/decnkjc141a/wish/327913346 Bohr's Model 376216 https://padlet.com/367813/decnkjc141a/wish/327915871 2019-02-05 17:45:30 UTC https://padlet.com/367813/decnkjc141a/wish/327915871 Thomson- 1897 367813 https://padlet.com/367813/decnkjc141a/wish/327916905 He discovered the electron.

Won the Nobel Prize in Physics in 1906.

Won the Copley Medal in 1914.]]> 2019-02-05 17:46:25 UTC https://padlet.com/367813/decnkjc141a/wish/327916905 Dalton's Model 376216 https://padlet.com/367813/decnkjc141a/wish/327917188 2019-02-05 17:46:48 UTC https://padlet.com/367813/decnkjc141a/wish/327917188 Ernest Rutherford 376216 https://padlet.com/367813/decnkjc141a/wish/327918425 1911-Discovered the proton
1908-1913-Conducted gold foil experiments, and discovered that atoms are made of a nucleus surrounded by an electron cloud]]> 2019-02-05 17:48:29 UTC https://padlet.com/367813/decnkjc141a/wish/327918425 Rutherford's Nuclear Model 376216 https://padlet.com/367813/decnkjc141a/wish/327920502 2019-02-05 17:51:33 UTC https://padlet.com/367813/decnkjc141a/wish/327920502 Marie Curie-1898 376216 https://padlet.com/367813/decnkjc141a/wish/327921098 Researched and named radioactivity

Won the Nobel Prize in Physics in 1903.]]> 2019-02-05 17:52:24 UTC https://padlet.com/367813/decnkjc141a/wish/327921098