Protons, Neutrons, and Electrons

Front

What are protons?

Back

Protons are positively charged particles found in the nucleus of an atom. They determine the atomic number of an element.

Front

What are neutrons?

Back

Neutrons are neutral particles found in the nucleus of an atom. They contribute to the atomic mass but do not affect the charge of the atom.

Front

What are electrons?

Back

Electrons are negatively charged particles that orbit the nucleus of an atom. They are involved in chemical bonding and reactions.

Front

What is the atomic number?

Back

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

Front

What is atomic mass?

Back

Atomic mass is the weighted average mass of an atom's isotopes, measured in atomic mass units (amu).

Front

How many protons does Sodium have?

Back

Sodium has 11 protons.

Front

How many protons does Calcium have?

Back

Calcium has 20 protons.

Front

What is the charge of a proton?

Back

The charge of a proton is +1.

Front

What is the charge of an electron?

Back

The charge of an electron is -1.

Front

What is the charge of a neutron?

Back

Neutrons have no charge; they are neutral.