During this hands-on activity, young chemists build molecular models based on the Lewis dot structure before studying valence shell electron pair repulsion theory. 

Concepts

chemical nomenclature, chemical formulas, lewis dot structures, valence electrons

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Additional Tags

science

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Instructional Ideas

• Ask a geologist to visit the class to discuss crystal formation in minerals

Classroom Considerations

• Be aware of any allergies when selecting materials
• Number each kit and have pupils sign out which kit they use, so you know where to look if there is a missing piece
• The fifth in a series of 11 lessons

Pros

• Includes many strategies for differentiation
• Provides an extension list of advanced molecules and ions

Cons

• None

Common Core

RST.9-10.3 RST.11-12.3