Timeline Atomic Theory by RAUL EDUARDO DEL TORO VELA https://padlet.com/02458/3ad3gjjrugc6oinm By: Raul Del Toro en-us 2021-05-07 03:10:46 UTC 2021-05-07 03:37:26 UTC hello@padlet.com https://padlet.net/icons/png/1f600.png Democtritus 02458 https://padlet.com/02458/3ad3gjjrugc6oinm/wish/1500948197 Democritus was a Greek philosopher who lived between 470-380 B.C. He developed the concept of the 'atom', Greek for 'indivisible'. Democritus believed that everything in the universe was made up of atoms]]> 2021-05-07 03:12:12 UTC https://padlet.com/02458/3ad3gjjrugc6oinm/wish/1500948197 john Dalton 02458 https://padlet.com/02458/3ad3gjjrugc6oinm/wish/1500983021 He developed methods to calculate atomic weights and structures and formulated the law of partial pressures. he sayd that elements are made of tiny things called atoms.]]> 2021-05-07 03:30:55 UTC https://padlet.com/02458/3ad3gjjrugc6oinm/wish/1500983021 michael faraday 02458 https://padlet.com/02458/3ad3gjjrugc6oinm/wish/1500983885 -The structure of atoms is related to electricity in some way.
-Discovered a number of new organic compounds. and he discovered the effect of magnetisms in light ]]> 2021-05-07 03:31:26 UTC https://padlet.com/02458/3ad3gjjrugc6oinm/wish/1500983885 J.J Thomson 02458 https://padlet.com/02458/3ad3gjjrugc6oinm/wish/1500985931 -Using a cathode ray tube, atoms with negative particles (electrons) were discovered.
-The charge-to-mass ratio of electrons was discovered by him; 1.76x108 C/g.]]> 2021-05-07 03:32:38 UTC https://padlet.com/02458/3ad3gjjrugc6oinm/wish/1500985931 Robert Milikan 02458 https://padlet.com/02458/3ad3gjjrugc6oinm/wish/1500988030 -The charge of an electron was measured using oil droplets.]]> 2021-05-07 03:33:51 UTC https://padlet.com/02458/3ad3gjjrugc6oinm/wish/1500988030 Ernest Rutherfurd 02458 https://padlet.com/02458/3ad3gjjrugc6oinm/wish/1500989634 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.]]> 2021-05-07 03:34:49 UTC https://padlet.com/02458/3ad3gjjrugc6oinm/wish/1500989634 Henry Moseley 02458 https://padlet.com/02458/3ad3gjjrugc6oinm/wish/1500991846 The Moseley atomic # and each elements contains a unique number of protons.]]> 2021-05-07 03:35:58 UTC https://padlet.com/02458/3ad3gjjrugc6oinm/wish/1500991846 Niel Bohr 02458 https://padlet.com/02458/3ad3gjjrugc6oinm/wish/1500993391 -Electrons orbit the nucleus.
- Model based on the hydrogen atom.
-Energy of the electrons is quantized.]]> 2021-05-07 03:36:55 UTC https://padlet.com/02458/3ad3gjjrugc6oinm/wish/1500993391