Lesson 23 · about 20 minutes

How chemists see molecules

Light that makes bonds wiggle, a machine that weighs molecules, and magnets that find their hydrogens.

You will learn

  • Why each kind of bond absorbs its own infrared light
  • How to spot O–⁠H and C=O bonds in an infrared spectrum
  • How a mass spectrometer weighs a molecule and its pieces
  • What NMR shows about a molecule's hydrogens, and how MRI uses it