Subatomic Particles

Front

Protons are

Back

Positive subatomic particles found in the nucleus of an atom.

Front

What is represented by the letter S?

Back

Electron, which is a negatively charged subatomic particle.

Front

Neutrons have

Back

No charge; they are neutral subatomic particles found in the nucleus.

Front

Electrons are

Back

Negative subatomic particles that orbit the nucleus of an atom.

Front

An element has an atomic number of 9 and a mass of 19 amu. What is the number of neutrons this element has?

Back

10 neutrons (calculated as mass number - atomic number).

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the mass number?

Back

The total number of protons and neutrons in an atom's nucleus.

Front

Define subatomic particles.

Back

Particles that are smaller than atoms, including protons, neutrons, and electrons.

Front

What charge do neutrons have?

Back

Neutrons have no charge (neutral).

Front

What is the charge of an electron?

Back

Electrons have a negative charge.