Parts of an Atom

Front

What is the smallest unit of matter?

Back

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

Front

What are the three main subatomic particles of an atom?

Back

Protons, Neutrons, and Electrons.

Front

What charge does a proton have?

Back

A proton has a positive charge.

Front

What charge does an electron have?

Back

An electron has a negative charge.

Front

What is the charge of a neutron?

Back

A neutron is electrically neutral and has no charge.

Front

Where are protons and neutrons located in an atom?

Back

Protons and neutrons are located in the nucleus of an atom.

Front

What is the nucleus of an atom?

Back

The nucleus is the central region of an atom that contains protons and neutrons.

Front

What is an electron cloud?

Back

The electron cloud is the region around the nucleus where electrons are likely to be found.

Front

What is the mass of a proton compared to a neutron?

Back

A proton and a neutron have approximately the same mass.

Front

What is the mass of an electron compared to protons and neutrons?

Back

An electron has a much smaller mass compared to protons and neutrons.