PERIODIC TABLE

Front

What is the Periodic Table?

Back

A tabular arrangement of chemical elements, organized by increasing atomic number, where elements with similar properties are grouped together.

Front

What does the atomic number represent?

Back

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

Front

What is the atomic mass?

Back

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

Front

What are periods in the Periodic Table?

Back

Horizontal rows in the Periodic Table that indicate the number of electron shells in the elements.

Front

What are groups in the Periodic Table?

Back

Vertical columns in the Periodic Table that group elements with similar chemical properties.

Front

What is a chemical symbol?

Back

A one or two-letter abbreviation used to represent an element, such as 'Na' for Sodium.

Front

What is the significance of the position of an element in the Periodic Table?

Back

The position indicates the element's properties, including its reactivity, state of matter, and electron configuration.

Front

What are valence electrons?

Back

Electrons in the outermost shell of an atom that determine its chemical behavior.

Front

What is an isotope?

Back

Atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

What does the term 'alkali metals' refer to?

Back

Group 1 elements in the Periodic Table, known for being highly reactive and having one valence electron.