Molecules

This course was written by MinuteEarth, creators of YouTube videos that combine world-class explanations and visuals to help viewers understand complicated science.

The definition of a molecule is pretty simple: it's any group of atoms held together by chemical bonds. Because molecules can come in a huge variety of shapes and structures, scientists have come up with a wide range of diagrams and visual metaphors to represent them. These can feel overwhelming, and sometimes even contradictory. But we're here to help!