Atomic History (Scientists)

Front

Who proposed that the atom consists mostly of empty space?

Back

Rutherford

Front

What model is the current model of the atom?

Back

The Quantum Mechanical Model

Front

Democritus believed that the smallest particles were atomos, the Greek word for what?

Back

uncut or indivisible

Front

Who was the first contributor to the atomic theory?

Back

Democritus

Front

Who discovered electrons?

Back

J.J. Thompson

Front

What is the main idea of Dalton's atomic theory?

Back

All matter is made up of atoms, which are indivisible and indestructible.

Front

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

Back

He discovered the electron and proposed the Plum Pudding Model.

Front

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

Back

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

Front

What did Bohr's model of the atom introduce?

Back

It introduced the idea of quantized energy levels for electrons.

Front

What is the Quantum Mechanical Model of the atom?

Back

It describes electrons as wave functions and incorporates the principles of quantum mechanics.