Atom Model History

Front

What is the charge of a neutron?

Back

Neutral

Front

Who discovered the electron in 1897?

Back

Thomson

Front

Where are the electrons located in an atom?

Back

Outside the nucleus

Front

Who proposed the 'plum pudding' model of the atom?

Back

Thomson

Front

Who first introduced the concept of an atom as 'atomos'?

Back

Democritus

Front

What is the main component of the nucleus of an atom?

Back

Protons and neutrons

Front

What is the charge of a proton?

Back

+ (positive)

Front

What is the charge of an electron?

Back

- (negative)

Front

What did Rutherford's gold foil experiment demonstrate?

Back

The existence of a dense nucleus in the atom.

Front

What is the Bohr model of the atom?

Back

A model that depicts electrons orbiting the nucleus in fixed paths.