History of Atom

Front

Who proposed the plum pudding model of the atom?

Back

J. J. Thomson proposed the plum pudding model, which suggested that atoms are composed of a positive 'soup' with negatively charged electrons embedded within.

Front

What is the main feature of the Bohr Model?

Back

The main feature of the Bohr Model is that electrons are in fixed orbits around the nucleus, similar to planets orbiting the sun.

Front

What is the Thomson Model?

Back

The Thomson Model, also known as the plum pudding model, describes the atom as a sphere of positive charge with electrons scattered throughout.

Front

Who performed the Gold Foil Experiment?

Back

Ernest Rutherford performed the Gold Foil Experiment, which led to the discovery of the atomic nucleus.

Front

Who discovered the electron?

Back

Joseph Thomson discovered the electron in 1897 through experiments with cathode rays.

Front

What did the Gold Foil Experiment demonstrate?

Back

The Gold Foil Experiment demonstrated that atoms have a small, dense nucleus that is positively charged.

Front

What is the significance of the Rutherford Model?

Back

The Rutherford Model introduced the concept of a nucleus at the center of the atom, changing the understanding of atomic structure.

Front

What are the main components of an atom?

Back

The main components of an atom are protons, neutrons, and electrons.

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What is the charge of a proton?

Back

A proton has a positive charge.