Predicting Properties with the Periodic Table
aligned to Hs-ps1-1. Use The Periodic Table As A Model To Predict The Relative Properties Of Elements Based On The Patterns Of Electrons In The Outermost Energy Level Of Atoms.
Learning Objective
I can use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.
Lesson Flow
Watch Video
Periodic trends and Coulomb's law | Atomic structure and properties | AP Chemistry | Khan Academy
Khan Academy
Guided Notes
Key concepts students will learn:
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According to Coulomb's Law, the magnitude of force between two charged particles is proportional to the product of their charges divided by the distance between them squared.
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The effective nuclear charge (Zeff) is the charge felt by valence electrons, and it can be approximated by the atomic number minus the number of core electrons.
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Ionization energy generally increases as you move up and to the right on the periodic table, while atomic radius generally decreases in the same direction.
Practice
12 questions • Multiple choice & Short answer
Exit Ticket
“Based on periodic trends, which element, oxygen or sulfur, would you predict to have a higher ionization energy? Explain your reasoning using the concepts of effective nuclear charge and atomic radius.”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
