Atomic Structure

Front

Subatomic particles with a negative charge

Back

Electrons

Front

Subatomic particles with a positive charge

Back

protons

Front

Measure mainly of the nuclear particles: protons + neutrons

Back

Atomic Mass

Front

Value representing the number of protons in an element

Back

Atomic Number

Front

Subatomic particles that are neutral in charge

Back

Neutrons

Front

The smallest particle of an element that shows all the properties of that element.

Back

Atom

Front

A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass

Back

Nucleus

Front

The smallest particle of an element.

Back

Atom

Front

A substance that cannot be broken down into other substances by chemical or physical means.

Back

Element

Front

A combination of two or more atoms

Back

Molecule