What are the 5 atomic theories?

List of Atomic Theories

  • Ancient Greek Beliefs.
  • Dalton’s Atomic Theory.
  • J.J. Thomson’s Theory.
  • Rutherford’s Hypothesis.
  • Bohr’s Theory.
  • Einstein, Heisenberg and Quantum Mechanics.

What are the 4 atomic theories?

Dalton’s Atomic Theory

  • All matter is made of atoms. Atoms are indivisible and indestructible.
  • All atoms of a given element are identical in mass and properties.
  • Compounds are formed by a combination of two or more different kinds of atoms.
  • A chemical reaction is a rearrangement of atoms.

What are the 5 atomic models in order?

The five atomic models are as follows:

  • John Dalton’s atomic model: Dalton´s Billiard Ball (Solid Sphere) Model.
  • J.J. Thomson’s model: Plum Pudding model.
  • Ernest Rutherford’s model: Nuclear model.
  • Niels Bohr’s model: Planetary model.
  • Erwin Schrödinger’s model: Electron Cloud Model/Quantum Model.

What is an isotope IB chemistry?

Isotopes are atoms of a specific element that have a definite number of neutrons and consequently a different mass. In effect all atoms are isotopes of one element or another. Most elements have several isotopes, some of which are stable, and others that spontaneously break apart releasing radioactivity.

What was JJ Thomson’s theory?

J.J. Thomson’s experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Thomson proposed the plum pudding model of the atom, which had negatively-charged electrons embedded within a positively-charged “soup.”

What are the 3 atomic models?

Atomic models

  • John Dalton’s atomic model.
  • Plum pudding model.
  • Rutherford’s model of the atom.
  • Bohr’s model of the atom.
  • Electron Cloud Model/Quantum Mechanics Model of Atom.
  • Basic description of the quantum mechanical atomic model:
  • Sources:

What is JJ Thomson best known for?

Thomson, in full Sir Joseph John Thomson, (born December 18, 1856, Cheetham Hill, near Manchester, England—died August 30, 1940, Cambridge, Cambridgeshire), English physicist who helped revolutionize the knowledge of atomic structure by his discovery of the electron (1897).