Evolution of the Atomic Model

Front

Who discovered the nucleus?

Back

Ernest Rutherford discovered the nucleus through his gold foil experiment.

Front

What experiment was used to discover the nucleus?

Back

The Gold Foil experiment was used to discover the nucleus.

Front

Who developed and used the gold foil experiment?

Back

Ernest Rutherford developed and used the gold foil experiment.

Front

Who was the first person to come up with the Atomic Theory?

Back

John Dalton was the first person to propose the Atomic Theory, which included four parts.

Front

What does the gold foil experiment demonstrate about atomic structure?

Back

The gold foil experiment demonstrates that most of the space inside an atom is empty.

Front

What are the four parts of Dalton's Atomic Theory?

Back

1. All matter is made of atoms. 2. Atoms are indivisible and indestructible. 3. All atoms of a given element are identical in mass and properties. 4. Compounds are formed by a combination of two or more different kinds of atoms.

Front

What did J.J. Thompson discover?

Back

J.J. Thompson discovered the electron and proposed the Plum Pudding Model of the atom.

Front

What is the Plum Pudding Model?

Back

The Plum Pudding Model is a historical model of the atom where electrons are embedded in a positively charged 'soup'.

Front

What did Niels Bohr contribute to atomic theory?

Back

Niels Bohr proposed the Bohr Model, which introduced the idea of quantized energy levels for electrons.

Front

What is the significance of the gold foil experiment's results?

Back

The results of the gold foil experiment led to the conclusion that atoms have a small, dense nucleus surrounded by mostly empty space.