Atomic Structure

Front

What is the basic unit of matter?

Back

An atom is the basic unit of matter.

Front

What are the three main subatomic particles in an atom?

Back

Protons, neutrons, and electrons.

Front

What charge do protons carry?

Back

Protons carry a positive charge.

Front

What charge do electrons carry?

Back

Electrons carry a negative charge.

Front

What charge do neutrons carry?

Back

Neutrons carry no charge (neutral).

Front

Where are protons located in an atom?

Back

Protons are 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 of an element?

Back

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

Front

How do you determine the number of neutrons in an atom?

Back

Number of neutrons = Atomic mass - Atomic number.

Front

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

Back

Protons and neutrons have approximately the same mass.