How do you know when an ionic bond requires two ions or if it needs more? The fifth video in the six-part series explains this concept. The video uses multiple examples using diagrams of valence electrons. 

Concepts

ionic bonds, electrostatics, valence electrons, chemical bonds, chemical reactions, ionic compounds

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Additional Tags

science

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Instructional Ideas

• Create additional practice problems for pupils to work on independently
• Review the rules for ionic bonding if students are still struggling

Classroom Considerations

• Relies on prior knowledge from the previous videos in the series

Pros

• Provides prompts to get out paper and pencil as well as pausing the video to solve practice problems
• Includes a reminder that ions are stable as long as their outer electron shells are full, not just if the outer shell has eight electrons

Cons

• None

Common Core

RST.9-10.4 RST.11-12.4