History of the Atom by ASHLEE NICOLE ATIENZA https://padlet.com/ashleenicoleatienza/hbdsz92lu8eatq5f en-us 2023-03-08 02:46:39 UTC 2023-03-08 20:17:29 UTC hello@padlet.com John Dalton ashleenicoleatienza https://padlet.com/ashleenicoleatienza/hbdsz92lu8eatq5f/wish/2508099667 Dalton's Atomic Theory (1804)
All matter is composed of extremely small particles called atoms. Atoms of a given element are identical in size, mass, and other properties. Atoms of different elements differ in size, mass, and other properties. Atoms cannot be subdivided, created, or destroyed.
]]> 2023-03-08 05:54:42 UTC https://padlet.com/ashleenicoleatienza/hbdsz92lu8eatq5f/wish/2508099667 J. J. Thomson ashleenicoleatienza https://padlet.com/ashleenicoleatienza/hbdsz92lu8eatq5f/wish/2509176274 On April 30, 1897, British physicist J.J. Thomson announced his discovery that atoms were made up of smaller components. This finding revolutionized the way scientists thought about the atom and had major ramifications for the field of physics.


]]> 2023-03-08 20:05:58 UTC https://padlet.com/ashleenicoleatienza/hbdsz92lu8eatq5f/wish/2509176274 Ernest Rutherford ashleenicoleatienza https://padlet.com/ashleenicoleatienza/hbdsz92lu8eatq5f/wish/2509177899 The Rutherford atomic model was also known as the "Rutherford nuclear atom" and the "Rutherford Planetary Model". In 1911, Rutherford described the atom as having a tiny, dense, and positively charged core called the nucleus. Rutherford established that the mass of the atom is concentrated in its nucleus.


]]> 2023-03-08 20:07:38 UTC https://padlet.com/ashleenicoleatienza/hbdsz92lu8eatq5f/wish/2509177899 Niels Bohr ashleenicoleatienza https://padlet.com/ashleenicoleatienza/hbdsz92lu8eatq5f/wish/2509180249 According to the Bohr model, often referred to as a planetary model, the electrons encircle the nucleus of the atom in specific allowable paths called orbits. When the electron is in one of these orbits, its energy is fixed.]]> 2023-03-08 20:09:51 UTC https://padlet.com/ashleenicoleatienza/hbdsz92lu8eatq5f/wish/2509180249 The structure of an atom ashleenicoleatienza https://padlet.com/ashleenicoleatienza/hbdsz92lu8eatq5f/wish/2509181445 An atom is a complex arrangement of negatively charged electrons arranged in defined shells about a positively charged nucleus. This nucleus contains most of the atom's mass and is composed of protons and neutrons (except for common hydrogen which has only one proton). All atoms are roughly the same size.]]> 2023-03-08 20:10:58 UTC https://padlet.com/ashleenicoleatienza/hbdsz92lu8eatq5f/wish/2509181445 Atomic theory ashleenicoleatienza https://padlet.com/ashleenicoleatienza/hbdsz92lu8eatq5f/wish/2509182675
 is the scientific theory that matter is composed of particles called atoms. Atomic theory traces its origins to an ancient philosophical tradition known as atomism. According to this idea, if one were to take a lump of matter and cut it into ever smaller pieces, one would eventually reach a point where the pieces could not be further cut into anything smaller. Ancient Greek philosophers called these hypothetical ultimate particles of matter atomos, a word which meant "uncut".



]]> 2023-03-08 20:12:11 UTC https://padlet.com/ashleenicoleatienza/hbdsz92lu8eatq5f/wish/2509182675 links for an in-depth atoms ashleenicoleatienza https://padlet.com/ashleenicoleatienza/hbdsz92lu8eatq5f/wish/2509186199 https://www.compoundchem.com/2016/10/13/atomicmodels/
https://www.britannica.com/science/atomic-theory]]> 2023-03-08 20:15:36 UTC https://padlet.com/ashleenicoleatienza/hbdsz92lu8eatq5f/wish/2509186199 ashleenicoleatienza https://padlet.com/ashleenicoleatienza/hbdsz92lu8eatq5f/wish/2509189216 2023-03-08 20:17:20 UTC https://padlet.com/ashleenicoleatienza/hbdsz92lu8eatq5f/wish/2509189216