History of Atomic Theory

Front

What experiment did Rutherford conduct to discover the proton?

Back

Gold Foil Experiment

Front

Who is known for the 'Plum Pudding' model of the atom?

Back

J.J. Thomson

Front

Which scientist confirmed that the atom is mostly empty space?

Back

Ernest Rutherford

Front

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

Back

Niels Bohr

Front

Who discovered that the mass of a proton is equal to the mass of a neutron?

Back

James Chadwick

Front

What is the main idea of Dalton's Atomic Theory?

Back

All matter is made of indivisible atoms, which cannot be created or destroyed.

Front

What did Niels Bohr contribute to atomic theory?

Back

He proposed that electrons orbit the nucleus in fixed paths or energy levels.

Front

What is the significance of the Gold Foil Experiment?

Back

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

Front

What does the term 'nucleus' refer to in atomic structure?

Back

The central part of an atom, containing protons and neutrons.

Front

What is the charge of a proton?

Back

Positive charge.