What Are The Different Atomic Models? Dalton, Rutherford, Bohr and Heisenberg Models Explained

The video explores the evolution of atomic theory, starting with Democritus's idea of indivisible particles, through Dalton's experiments leading to the law of multiple proportions, and Thomson's plum pudding model. It then covers Rutherford's nuclear model, Bohr's quantum model, and Schrodinger's quantum mechanical model, highlighting key experiments and discoveries that shaped our understanding of atomic structure.

Who proposed that everything is made of tiny, indestructible particles called 'atamos'?

• Aristotle

• Democritus

• JJ Thompson

• John Dalton

What was the key observation in John Dalton's experiments with gases?

• Gases reacted in random proportions

• Gases reacted in fixed ratios

• Gases did not react at all

• Gases changed color

What did JJ Thompson's plum pudding model suggest about the structure of an atom?

• Atoms are made of four elements

• Atoms are a positive mass with embedded negative charges

• Atoms are indivisible

• Atoms have a nucleus

What was the unexpected result of Rutherford's gold foil experiment?

• No particles were detected

• Some particles were deflected at large angles

• Particles changed color

• All particles passed through the foil

According to Bohr's model, how do electrons maintain atomic stability?

• By merging with the nucleus

• By staying still

• By moving randomly

• By jumping between fixed orbits and emitting energy

What principle did Bohr's model fail to satisfy?

• Law of Conservation of Mass

• Heisenberg Uncertainty Principle

• Law of Multiple Proportions

• Principle of Relativity

In Schrödinger's quantum mechanical model, where are electrons most likely to be found?

• In fixed orbits

• In the nucleus

• In electron clouds

• In random locations