The Periodic Table MAKEUP

Front

What is the periodic table?

Back

A tabular arrangement of chemical elements, organized by increasing atomic number, electron configuration, and recurring chemical properties.

Front

What are groups in the periodic table?

Back

Vertical columns in the periodic table that categorize elements with similar chemical properties and the same number of valence electrons.

Front

What are periods in the periodic table?

Back

Horizontal rows in the periodic table that represent elements with the same number of electron shells.

Front

What is a valence electron?

Back

An electron in the outermost shell of an atom that can participate in chemical bonding.

Front

What is the significance of group 1 (1A) elements?

Back

They are alkali metals, highly reactive, and have one valence electron.

Front

What is the significance of group 18 (8A) elements?

Back

They are noble gases, known for having full outer electron shells, making them very stable and unreactive.

Front

What is ionization energy?

Back

The energy required to remove an electron from an atom or ion.

Front

What is electron configuration?

Back

The distribution of electrons in an atom's electron shells and subshells.

Front

What is a chemical bond?

Back

A lasting attraction between atoms that enables the formation of chemical compounds.

Front

What are metalloids?

Back

Elements that have properties of both metals and nonmetals, typically found along the zig-zag line on the periodic table.