Dalton's Atomic Theory
Proposed that matter is made up of small indivisible particles called atoms.
Thomson's Plum Pudding Model
Suggested that atoms are a uniform sphere of positive charge with embedded electrons.
Rutherford's Nuclear Model
Discovered that atoms have a dense nucleus positively charged, surrounded by electrons.
Bohr Model
Proposed that electrons orbit the nucleus in specific energy levels or shells.
Wave-Particle Duality
Concept that particles such as electrons exhibit both wave-like and particle-like properties.
Quantum Mechanical Model
Describes electrons in terms of probabilities rather than fixed orbits.
Electron Cloud Model
Visualizes the regions around the nucleus where electrons are likely to be found.
Heisenberg Uncertainty Principle
States that it is impossible to simultaneously know both the position and momentum of an electron.
Periodic Table Development
Organizes elements based on atomic number and properties, reflecting atomic structure.
Modern Atomic Theory
Incorporates principles of quantum mechanics into the understanding of atomic structure.