View full lesson: http://ed.ted.com/lessons/how-atoms-bond-george-zaidan-and-charles-morton

Atoms can (and do) bond constantly; it's how they form molecules. Sometimes, in an atomic tug-of-war, one atom pulls electrons from another, forming an ionic bond. Atoms can also play nicely and share electrons in a covalent bond. From simple oxygen to complex human chromosome 13, George Zaidan and Charles Morton break down the humble chemical bond.

Lesson by George Zaidan and Charles Morton, animation by Bevan Lynch.