In this crash course, explore why scientists develop scientific models like Lewis Structures, and how people can learn from them.

And thus begins the most revolutionary biology course in history. Come and learn about covalent, ionic, and hydrogen bonds. What about electron orbitals, the octet rule, and what does it all have to do with a mad man named Gilbert Lewis?...

Use this lesson to help understand how to calculate the difference in electronegativity to determine whether a bond is ionic, polar covalent, or nonpolar covalent. [6:55]

This lesson will define a binary ionic compound and give examples. It is 2 of 2 in the series titled "Ionic Compounds: Defining Binary Compounds."

This lesson will define a chemical bond as an "intramolecular" force, identify the three main types of bonds formed: ionic, covalent and metallic, and provide examples.

This lesson will show how to write a complete ionic equation and by omitting spectator ions a net ionic equation can be written. It is 1 of 2 in the series titled "Chemical Reaction Types: Net Ionic Equation."

This lesson will identify the three main types of compounds formed (metallic, ionic and covalent/molecular) and provide examples.

Mr. Andersen shows you how to determine if a bond is nonpolar covalent, polar covalent, or ionic.