Protons, Neutrons, & Electrons

Front

What is a proton?

Back

A proton is a positively charged subatomic particle found in the nucleus of an atom. It determines the atomic number of an element.

Front

What is a neutron?

Back

A neutron is a neutral subatomic particle found in the nucleus of an atom. It contributes to the mass number of an element but does not affect its charge.

Front

What is an electron?

Back

An electron is a negatively charged subatomic particle that orbits the nucleus of an atom. It plays a key role in chemical bonding.

Front

What is the mass number of an atom?

Back

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

Front

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

Back

To find the number of neutrons, subtract the atomic number (number of protons) from the mass number.

Front

What is the atomic number of an element?

Back

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

Front

What is the symbol for silver?

Back

The symbol for silver is Ag.

Front

What is the symbol for silicon?

Back

The symbol for silicon is Si.

Front

What is the symbol for arsenic?

Back

The symbol for arsenic is As.

Front

How many protons does magnesium have?

Back

Magnesium has 12 protons.