Atomic Structure

Front

What is the charge of a neutron?

Back

Neutrons have no charge (neutral).

Front

What subatomic particle orbits the nucleus of an atom?

Back

Electrons orbit the nucleus of an atom.

Front

What particle uniquely identifies an element?

Back

The number of protons in an atom identifies the element.

Front

What is matter made of?

Back

All matter is made of atoms.

Front

Where is most of the mass in an atom concentrated?

Back

Most of the mass in an atom is concentrated in the nucleus.

Front

What are the three main subatomic particles?

Back

Protons, neutrons, and electrons.

Front

What is the charge of a proton?

Back

Protons have a positive charge.

Front

What is the charge of an electron?

Back

Electrons have a negative charge.

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons.

Front

How do protons and neutrons compare in mass?

Back

Protons and neutrons have approximately the same mass, which is much greater than that of electrons.