Atomic Structure

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What are the three main parts of an atom?

Back

The three main parts of an atom are protons, neutrons, and electrons.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge (it is neutral).

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

Where are protons located in an atom?

Back

Protons are located in the nucleus of an atom.

Front

Where are neutrons located in an atom?

Back

Neutrons are also located in the nucleus of an atom.

Front

Where are electrons located in an atom?

Back

Electrons are located in the electron cloud surrounding the nucleus.

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is the atomic mass number?

Back

The atomic mass number is the total number of protons and neutrons in an atom.