Valence Electrons

Looking at valence electrons to figure out reactivity

You can view the transcript for “Valence Electrons” here (opens in new window).

Ions and the Octet Rule

This lesson discusses why atoms form ions in terms of the octet rule, and how to apply the octet rule in predicting ion formation. It also explains how to determine charge and the difference between cations and anions.

You can view the transcript for “Chemistry 2.9 Ions and the Octet Rule” here (opens in new window).

Bonding Models and Lewis Structures: Crash Course Chemistry #24

Models are great, except they’re also usually inaccurate. In this episode of Crash Course Chemistry, Hank discusses why we need models in the world and how we can learn from them . . . even when they’re almost completely wrong. Plus, Lewis Structures!

You can view the transcript for “Bonding Models and Lewis Structures: Crash Course Chemistry #24” here (opens in new window).

Dot Structures I: Single Bonds

You can view the transcript for “Dot structures I: Single bonds | Structure and bonding | Organic chemistry | Khan Academy” here (opens in new window).

Dot Structures II: Multiple Bonds

You can view the transcript for “Dot structures II: Multiple bonds | Structure and bonding | Organic chemistry | Khan Academy” here (opens in new window).

How to Draw Lewis Structures: Five Easy Steps

A video tutorial for how to draw Lewis Structures in five steps. The video covers the basic Lewis structures you’ll see in an introductory chemistry class.

You can view the transcript for “How to Draw Lewis Structures: Five Easy Steps” here (opens in new window).