The History of the Atom

Front

Who discovered the electron?

Back

Thomson

Front

Which Greek philosopher first introduced the idea of an atom?

Back

Democritus

Front

What does the Greek word 'atomos' mean?

Back

Indivisible

Front

What were electrons originally called?

Back

Corpuscles

Front

Who proposed the solar system model of the atom?

Back

Niels Bohr

Front

What is the nucleus of an atom?

Back

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

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutral particles found in the nucleus of an atom.

Front

What is the charge of an electron?

Back

Negatively charged.

Front

What is Dalton's atomic theory?

Back

A theory that states that all matter is made of atoms, which are indivisible and indestructible.