Atomic Structure

Front

What are the three main subatomic particles of an atom?

Back

Protons, Neutrons, Electrons.

Front

Which subatomic particles contribute the most to the mass of an atom?

Back

Protons and Neutrons.

Front

What is an isotope?

Back

Atoms of the same element with different numbers of neutrons.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

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

Back

Mass number - Atomic number.

Front

What is a neutral atom?

Back

An atom with an equal number of protons and electrons.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of a neutron?

Back

Neutral.

Front

What is the charge of an electron?

Back

Negative.