Chemistry 04：Periodic Table 01

Who created the periodic table? How was it created? In this Originals content, we will talk about the founder of the periodic table and look at some trends that exist within.

Content Overview:

• Dmitri Mendeleev
• Atomic Radius
• Ionic Radius

Activities:

I. Dmitri Mendeleev:

• View an introduction video to Dmitri Mendeleev and the creation of the periodic table.
• 💡 Originals Content Tip: Teachers/students may click on the figure to open a link to more details of Dmitri Mendeleev.

II. Color in the Periodic Table of Elements:

• Introduce the different families on the periodic table.
• Students may color in the periodic table following the color guide for each family.
• After coloring, students may drag the bird from the bottom right corner of the screen to its silhouette on the top left corner of the screen.
• 💡 Originals Content Tip: Teachers/students may click on the title to open a link to a periodic table.

III.   Atomic Radius:

• Draw Bohr model for the elements shown to understand how the atomic radius changes across and down the periodic table.
• Explain effective nuclear charge and how atomic radius changes across the periodic table.
• Conclusion: write down the conclusion of how atomic radius changes across and down the periodic table.

IV.  Ionic Radius:

• 💡 Originals Content Tip: Use the “polls” feature and ask students how they think ionic radius would change across and down the periodic table.
• Explain how ionic radius changes on the periodic table by drawing out sodium, sodium ion, chlorine, and chlorine ion.
• Conclusion: Teachers/students may write down the conclusion of how ionic radius changes across and down the periodic table.