Atomic Structure

Front

Atoms of the same element must always have the same number of _________

Back

protons

Front

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

Back

mass number

Front

Calculation used to find the number of neutrons in an atom

Back

Mass Number - Atomic Number

Front

Subatomic particles with a negative charge

Back

Electrons

Front

Subatomic particles with a positive charge

Back

Protons

Front

The center of an atom, containing protons and neutrons, is called the _________.

Back

nucleus

Front

The number of protons in an atom is known as its _________.

Back

atomic number

Front

What is the charge of neutrons?

Back

Neutral (no charge)

Front

Isotopes are atoms of the same element with different numbers of _________.

Back

neutrons

Front

The mass number of an atom is equal to the number of _________ plus the number of _________.

Back

protons; neutrons