Crash Course
Carbon... SO SIMPLE: Crash Course Biology
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?...
Khan Academy
Khan Academy: Solubility of Organic Compounds
Organic compounds tend to dissolve well in solvents that have similar properties to themselves. This principle is often referred to as like dissolves like, which means that polar molecules will generally dissolve well in polar solvents...