The Atomic Theory

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The Atomic Theory

The Atomic TheoryBy: Edu Tellez

Perdicted that every piece of matter is made up of smaller pieces called "Atoms" Democritus Said that these "Atoms" were indivisible; Meaning they could not be made or distroyed. The problem with this thoery was that no one really knows how they look.The Problem with Democritus's "Theory" was that he imagined an atom like s tiny dot on a piece of paper, which is not at all even the least bit correct

Found a mathematical equation. Electrons where Paticles and Waves all at the same time: The problem with this was that people could not wrap there heads around the fact that an Electron could be both, they had to be either a wave, or a particle.

Experimented with Hydrogen. Worked in the Mahnattan Project in the U.S to help develop the first Atomic BombThe problem with this is that Bohr's findings could lead to mass distruction The only problem is that Bohr Diagrams are not to scale, or correct, but they make life easier.

Discovered the true charge of an Electron through his Famous "Oil Drop Experiment"

ErwinSchrodinger 1926

discovered the Neutron in an Atom, and that every Atom has a Atomic mass and an atomic #.

was a career scientist, who thought that atoms could be grouped together to form a thing he called an "Element". He said that atoms could not be created, divided into smaller particles and that they could not be destroyed. The problem with this was that he did not know about isotopes and that atoms that are grouped together make a compound not an Element.

Father of the Nucleus!Claimed that negative and positive attract, and that same charges must repell; Paths change , different charges are centered in the middle(nucleus), And that the Electrons are scattered around the outside of the nuclus

James Chadwick 1932-35

John Dolton 1830

Democritus 400 B.C

Robert Millikan 1909

Neils Bohr 1913

He Discoverd the Electron!who claimed if an atom had a negative charge then there had to be a positive charge; Negative charged electrons must be stuck all through out a positive charged area (Plum pudding)The only problem, was that he didn't mention protons, a nucleus, and the electrons where incorrectly placed.

JJ Thomson1897


Ernest Rutherford 1911


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