History of the Atom Flashcard

Front

Who proposed the 'solar system' model of an atom?

Back

Niels Bohr proposed the 'solar system' model of an atom where electrons revolve around the nucleus.

Front

Where are electrons located according to Bohr's model?

Back

Electrons are located in circular orbits around the nucleus.

Front

What are the conclusions based on Rutherford’s gold foil experiment?

Back

1. Atom is mostly empty space. 2. The nucleus is positively charged. 3. The atom has a small dense nucleus. (All answers are correct.)

Front

What model describes electrons in circular orbits around the nucleus?

Back

Bohr Model describes electrons in circular orbits around the nucleus.

Front

Who developed the Quantum Mechanical Model?

Back

Erwin Schrodinger developed the Quantum Mechanical Model.

Front

What is the main idea of the Thomson Model?

Back

The Thomson Model suggests that atoms are composed of electrons scattered within a 'soup' of positive charge.

Front

What did Rutherford's experiment reveal about the atom?

Back

Rutherford's experiment revealed that atoms have a small, dense, positively charged nucleus.

Front

What is the significance of the Bohr Model?

Back

The Bohr Model introduced the idea of quantized energy levels for electrons.

Front

What does the term 'electron cloud' refer to?

Back

The electron cloud refers to the regions around the nucleus where electrons are likely to be found.

Front

What is the difference between the Bohr Model and the Quantum Mechanical Model?

Back

The Bohr Model describes electrons in fixed orbits, while the Quantum Mechanical Model describes electrons in probabilistic distributions.