Subatomic Particles

Front

What is the smallest subatomic particle?

Back

Electrons are the smallest subatomic particles.

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 many protons does an element with atomic number 9 have?

Back

An element with atomic number 9 has 9 protons.

Front

How many electrons does an element with atomic number 9 have?

Back

An element with atomic number 9 has 9 electrons.

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in the nucleus.

Front

How many neutrons does Hydrogen have?

Back

Hydrogen has 0 neutrons.

Front

What charge do neutrons have?

Back

Neutrons have no charge.

Front

What is the charge of protons?

Back

Protons have a positive charge.

Front

What is the charge of electrons?

Back

Electrons have a negative charge.

Front

What is an atom?

Back

An atom is the basic unit of a chemical element, consisting of protons, neutrons, and electrons.