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Stated that all things are made of atoms.
Invisible and indestructible.
Empty space between atoms.
Atom have rounds shape.
Solid Sphere Model. -
All atoms have characteristic weight and mass.
An element is made of all identical atoms together.
Chemical reactions involve rearranging atoms.
Stated general information on the atom.
Solid Sphere Model -
Discovered electrons.
Discovered that atoms can be split.
Atoms are made of postive charged cores with negative particles PLUM PUDDING:
- Electrons are the negative plums in positive pudding
- Plum Pudding model made before nucleus discovered -
Proposed the quantum of light.
States that light behaves like a particle but also has wave lengths which gives it a dual nature.
Showed how energy and mass equal through his E=mc^2 -
Concluded on dense small nucleus.
Positively charged due to neutrons (neutral) and protons (positive)
Rutherford Atomic model shows positive nucleus in center of atom. -
Discovered the negative charge of an electron.
Through his "oil drop" expirement. -
Created a physical picture of the atomic structure.
With improvements, Bohr's pictures are still used to show physical and chemical characteristics of atom.
Model shows nuclueus and the 3 shells of electrons.
Each shell shows max number of electrons possible in shell -
Stated that electrons could act as wave lengths.
Was the basis of what is now Wave Mechanics Theory.
This explained why electrons do things we couldn't explain why before. -
States that no two electrons in an atom have the same four quantum numbers.
Also stated that as an elctron orbits the nucleus it should also spin
Contributes the the planetary atomic model. -
Inferred that electrons were continuous clouds.
Created wave mechanics as a mathematical model to show the distribution of electrons in an atom.
Worked off of Louis de Broglie's work. -
Discovered neutron.
Atomic particle with neutral charge and around same mass as proton.
Found in nucleus. -
Studied the pattern of electrons.
Inferred that electrons orbit the nucleus.
Helped form the Planetary Atomic Model.
Helped clarify the modern veiw of an atom.
