PERIODIC TABLE

Front

What is the main purpose of the periodic table?

Back

To organize and classify all known elements based on their properties and atomic structure.

Front

What does 'group' refer to in the periodic table?

Back

A vertical column in the periodic table where elements have similar chemical properties.

Front

What does 'period' refer to in the periodic table?

Back

A horizontal row in the periodic table that indicates the number of electron shells an element has.

Front

How many groups are there in the periodic table?

Back

There are 18 groups in the periodic table.

Front

What is an atomic number?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is an atomic mass?

Back

The weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

What are alkali metals?

Back

Elements found in group 1 of the periodic table, known for being highly reactive and having one electron in their outer shell.

Front

What are noble gases?

Back

Elements found in group 18 of the periodic table, known for being inert and having a full outer electron shell.

Front

What is the significance of the zig-zag line on the periodic table?

Back

It separates metals from nonmetals and indicates the position of metalloids.

Front

What are transition metals?

Back

Elements found in groups 3-12 of the periodic table, known for their ability to form various oxidation states and colored compounds.