https://padlet.com/isabel0610/r4jif1921wpf5spp Made with a dash of wit. en-us 2022-10-14 03:55:28 UTC 2022-10-24 06:45:00 UTC hello@padlet.com isabel0610 https://padlet.com/isabel0610/r4jif1921wpf5spp/wish/2344513760 Democritus felt that our universe is formed by two elements: the atoms and the emptiness.  He believed that Atoms are microscopic quantities of material that makes up existence.]]> 2022-10-18 05:38:25 UTC https://padlet.com/isabel0610/r4jif1921wpf5spp/wish/2344513760 isabel0610 https://padlet.com/isabel0610/r4jif1921wpf5spp/wish/2344514212 Aristotle was opposed to the atomic hypothesis. Instead, he argued that everything is composed of four elements: fire, water, air, and earth. He thought that all materials on Earth included trace quantities of each element.]]> 2022-10-18 05:38:57 UTC https://padlet.com/isabel0610/r4jif1921wpf5spp/wish/2344514212 isabel0610 https://padlet.com/isabel0610/r4jif1921wpf5spp/wish/2344514434 John Dalton combined Aristotle's theories with his own. He said that everything is made up of atoms that cannot be broken down into smaller parts. He further noted that while all atoms of the same element are identical, other elements are made up of different atoms.]]> 2022-10-18 05:39:12 UTC https://padlet.com/isabel0610/r4jif1921wpf5spp/wish/2344514434 isabel0610 https://padlet.com/isabel0610/r4jif1921wpf5spp/wish/2344515486 Thompson became the first person to introduce the concept of negatively charged electrons with unknown positive charges. Thomson's atomic model states that an atom is composed of a positively charged sphere within which negatively charged electrons are put. He stated that if an atom has more positive mass, it is positively charged, and if it has more negatively charged electrons, it is negatively charged.]]> 2022-10-18 05:40:21 UTC https://padlet.com/isabel0610/r4jif1921wpf5spp/wish/2344515486 isabel0610 https://padlet.com/isabel0610/r4jif1921wpf5spp/wish/2344515795 The atom, according to Rutherford, has an atomic nucleus that includes protons and neutrons. He also believed that electrons orbit the nucleus, but he died before his theory could be tested.]]> 2022-10-18 05:40:45 UTC https://padlet.com/isabel0610/r4jif1921wpf5spp/wish/2344515795 isabel0610 https://padlet.com/isabel0610/r4jif1921wpf5spp/wish/2344516510 The modern atom is composed of a nucleus, protons, electrons, and neutrons. The number of protons in an atom determines which element it belongs to; nevertheless, even if they all have the same number of protons, each atom of a given element may not be the same in mass and weight.]]> 2022-10-18 05:41:34 UTC https://padlet.com/isabel0610/r4jif1921wpf5spp/wish/2344516510 isabel0610 https://padlet.com/isabel0610/r4jif1921wpf5spp/wish/2344516534 At 1926, Heisenberg and Schrodinger applied Bohr's atomic model to formulate arithmetic equations to determine the likelihood of finding an electron in a specific location. The quantum mechanical model of the atom is the atomic model developed by Heisenberg and Schrodinger.]]> 2022-10-18 05:41:35 UTC https://padlet.com/isabel0610/r4jif1921wpf5spp/wish/2344516534 isabel0610 https://padlet.com/isabel0610/r4jif1921wpf5spp/wish/2344516535 Bohr advanced the hypothesis that electrons pursue a fixed path around the nucleus.]]> 2022-10-18 05:41:35 UTC https://padlet.com/isabel0610/r4jif1921wpf5spp/wish/2344516535