The Periodic Table
Grade 11•45 minutes
Learning Objective
I can explain the history and logic behind the Periodic Table of the Elements.
Practice Questions
This lesson includes 7 practice questions to reinforce learning.
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1. Explain why Mendeleev left gaps in his periodic table. What did these gaps represent?
2. How did Mendeleev's predictions about "eka-aluminum" (gallium) demonstrate the power and validity of his periodic table?
3. Besides atomic weight, what other properties did Mendeleev use to arrange the elements in his periodic table?
...and 4 more questions
Educational Video
The genius of Mendeleev's periodic table - Lou Serico
TED-Ed