History of Atomic Structure

Front

What part of the atom did Ernst Rutherford discover through the use of gold foil?

Back

Nucleus

Front

Who proposed that electrons move around the nucleus in circular orbits?

Back

Bohr

Front

What is Dalton's Model of the atom?

Back

Dalton's Model describes the atom as a solid, indivisible sphere.

Front

In Schrodinger's model, where are electrons located around the nucleus?

Back

In clouds.

Front

What describes an electron that has gained energy and jumped to another shell?

Back

Excited state.

Front

What is the main idea of the Bohr model of the atom?

Back

Electrons orbit the nucleus in fixed paths.

Front

What did J.J. Thomson discover about the atom?

Back

He discovered the electron and proposed the 'plum pudding' model.

Front

What is the significance of the gold foil experiment?

Back

It led to the discovery of the nucleus and the understanding that atoms are mostly empty space.

Front

What does the term 'ground state' refer to in atomic structure?

Back

The lowest energy state of an electron in an atom.

Front

What is the difference between an atom and an ion?

Back

An atom is neutral, while an ion has a net charge due to the loss or gain of electrons.