Periodic Table

Front

What are the three subatomic particles that make up an atom?

Back

Protons, neutrons, 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.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

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

Back

Subtract the atomic number from the atomic mass.

Front

What is the periodic table?

Back

A tabular arrangement of elements organized by increasing atomic number.

Front

What is the significance of the groups in the periodic table?

Back

Elements in the same group have similar chemical properties.

Front

What is the significance of the periods in the periodic table?

Back

Elements in the same period have the same number of electron shells.

Front

How many elements are classified as metals on the periodic table?

Back

Approximately 80.