Atomic Structure

Front

What is the mass number of an atom?

Back

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

Front

What does the atomic number represent in an element?

Back

The atomic number of an element equals the number of protons in an atom of that element.

Front

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

Back

The number of neutrons in an atom can be calculated using the formula: Mass Number - Atomic Number.

Front

Where are electrons likely to be found in an atom?

Back

Electrons are likely to be found in the electron cloud as they travel around the nucleus.

Front

What is an ion?

Back

An ion is a charged atom.

Front

What particles are found in the nucleus of an atom?

Back

The nucleus of an atom contains protons and neutrons.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge (it is neutral).

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What is the relationship between mass number and atomic number?

Back

The mass number is the total number of protons and neutrons, while the atomic number is the number of protons.