Education Technology

Periodicity of Properties Exploration

Activity Overview

In this lesson, students will plot and analyze the periodic properties (melting point, boiling point, density, electronegativity, and first ionization).


  • Students will learn how certain properties of the elements tend toward a periodic similarity when the elements are arranged in order of increasing atomic number.
  • Students will note the intervals between similarities and the relationship between similar elements.


  • periodic table
  • atomic number
  • atomic mass
  • ionization energy
  • Periodic Law
  • Z
  • Zeff

About the Lesson

This lesson involves the periodic trends of certain properties of atoms.
As a result, students will:

  • Graph pertinent data and observe the trends that occur.
  • Answer questions to demonstrate their understanding of the periodic trends.
  • Learn the Periodic Law.