Periodic Table of Elements Review

Front

How is today's Periodic Table of Elements arranged?

Back

by atomic number

Front

The atomic number of an element tells us how many ____ are found in one atom of an element.

Back

electrons and protons

Front

How many protons, electrons, and neutrons are in Gold (Au)?

Back

79 protons, 79 electrons, 118 neutrons

Front

The Periodic Table of Elements has ____ known elements to date.

Back

118

Front

The formula you use to determine the number of neutrons is:

Back

atomic mass - atomic number = number of neutrons

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What does the atomic mass of an element represent?

Back

The average mass of an atom of an element, measured in atomic mass units (amu).

Front

What are the three main subatomic particles?

Back

Protons, neutrons, and electrons.

Front

Where are protons located in an atom?

Back

In the nucleus of the atom.

Front

What is the charge of a neutron?

Back

Neutrons have no charge (neutral).