Atomic Structure Review

Front

What is the atomic number of an atom?

Back

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

Front

What are protons?

Back

Protons are subatomic particles found in the nucleus of an atom that have a positive charge.

Front

What is an ion?

Back

An ion is a charged particle that forms when an atom loses or gains one or more electrons.

Front

What are neutrons?

Back

Neutrons are subatomic particles found in the nucleus of an atom that have no charge.

Front

How many protons does an atom of gold have?

Back

An atom of gold has 79 protons.

Front

What is the charge of electrons?

Back

Electrons are subatomic particles that 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

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

What is the difference between an atom and an ion?

Back

An atom is neutral, while an ion has a positive or negative charge due to the loss or gain of electrons.

Front

What is the role of electrons in an atom?

Back

Electrons are involved in chemical bonding and determine the atom's reactivity.