Front

The smallest particle of an element.

Back

Atom

Front

Measure mainly of the nuclear particles: protons + neutrons

Back

Atomic Mass

Front

Subatomic particles with a negative charge

Back

Electrons

Front

The only element with no neutrons in its nucleus.

Back

Hydrogen

Front

Subatomic particles found in the nucleus:

Back

Protons and Neutrons

Front

The center of an atom, containing protons and neutrons.

Back

Nucleus

Front

Positively charged subatomic particles found in the nucleus.

Back

Protons

Front

Neutral subatomic particles found in the nucleus.

Back

Neutrons

Front

The number of protons in the nucleus of an atom, which determines the element.

Back

Atomic Number

Front

The overall charge of an atom is determined by the balance of these particles.

Back

Protons and Electrons