6A Atomic Theory Review

Front

What is John Dalton's model of the atom?

Back

John Dalton proposed that the atom is small and indivisible.

Front

What is JJ Thomson's model of the atom?

Back

JJ Thomson proposed that the atom has negative electrons scattered in a positive cloud.

Front

What is Ernest Rutherford's model of the atom?

Back

Ernest Rutherford proposed that the atom has a positive nucleus surrounded by electrons.

Front

What is Niels Bohr's model of the atom?

Back

Niels Bohr proposed that the atom has a positive nucleus surrounded by electrons in discrete energy levels.

Front

What conclusion did Thomson draw from his experiments?

Back

Thomson concluded that the beam of light must be carrying negatively charged particles, because it was attracted to the positively charged metal plate.

Front

Who proposed the atomic model that includes a positive nucleus and electrons in discrete energy levels?

Back

Niels Bohr proposed this atomic model.

Front

What did Dalton's atomic theory state about atoms?

Back

Dalton's atomic theory stated that atoms are indivisible and that all atoms of a given element are identical.

Front

What is the significance of the gold foil experiment?

Back

The gold foil experiment conducted by Rutherford demonstrated that atoms have a small, dense, positively charged nucleus.

Front

What did Thomson use to discover the electron?

Back

Thomson used cathode ray tubes to discover the electron.

Front

What is the charge of an electron?

Back

The charge of an electron is negative.