Atomic Theory CFA

Front

What is the correct sequence of scientists who made major changes in the model of the atom?

Back

1. John Dalton 2. J.J. Thomson 3. Ernest Rutherford 4. Niels Bohr 5. Erwin Schrodinger

Front

What did J.J. Thomson's experiments reveal about the atom?

Back

Atoms contain negatively and positively charged particles.

Front

Who discovered the neutron?

Back

James Chadwick

Front

How did Rutherford discover the proton?

Back

Through the Gold Foil Experiment.

Front

What is the 'Plum Pudding' model of the atom?

Back

A model proposed by J.J. Thomson where electrons are embedded in a positively charged 'soup'.

Front

What is the main contribution of John Dalton to atomic theory?

Back

Proposed that atoms are indivisible and that each element consists of identical atoms.

Front

What did Ernest Rutherford's Gold Foil Experiment demonstrate?

Back

The existence of a dense nucleus at the center of the atom.

Front

What is the significance of Niels Bohr's model of the atom?

Back

Introduced the idea of quantized energy levels for electrons.

Front

What particle did J.J. Thomson discover?

Back

The electron.

Front

What is the charge of a neutron?

Back

Neutrons have no charge (neutral).