History of the atom

Front

What are the five main elements according to Aristotle?

Back

Earth, air, fire, water, and aether.

Front

Who was the Greek philosopher that named the smallest particle of matter an 'atom'?

Back

Democritus.

Front

What is a particle with one negative charge called?

Back

Electron.

Front

What is the neutral particle found in the nucleus called?

Back

Neutron.

Front

What did James Chadwick discover?

Back

Neutrons.

Front

What is the smallest unit of an element that retains its properties?

Back

Atom.

Front

What is the positively charged particle in an atom called?

Back

Proton.

Front

What is the term for the center of an atom?

Back

Nucleus.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of a neutron?

Back

Neutral.