Atomic Models Flashcards
Cloud or probability orbit of electrons
Schrodinger
Atoms have no internal structure
Democritus and Dalton
Elements are characterized by the weight of their atoms
Dalton
Discovered the electron
Thomson
Electrons are negatively charged particles suspended in the “fluid”
Thomson
Electrons exist in discrete energy levels
Bohr
Electrons can move between the energy levels by gaining or releasing energy
Bohr
The atom is mostly empty space
Rutherford
Atoms are completely solid
Democritus and Dalton
When elements react, it is their atoms that have combined to form new compounds.
Dalton
Each atom is a sphere filled with positively charged “fluid”
Thomson
Performed the Gold Foil Experiment
Rutherford
Atoms are indestructible and unchangeable
Democritus and Dalton
Planetary model of the atom
Bohr
Electrons fill the lowest energy level first
Bohr
Created the Plum Pudding Model of the atom
Thomson
All matter consists of tiny particles called atoms
Democritus and Dalton
S (sharp) P (principle) D (diffuse) F (fundamental)
Schrodinger
Electrons do not move in this model
Thomson
Each atom (of a different substance) is different in size, weight, and shape.
Democritus and Dalton
The atom has a dense positively charged core called the nucleus.
Rutherford
You take a piece of matter and divide it and continue to divide it you will eventually come to a point where you could not divide it anymore - atomos “indivisible”.
Democritus
The electron does not travel in an exact orbit
Schrodinger
