Reaction of Calcium Chloride in Bunsen Flame

In this video from Periodic Videos we look at the reaction of Calcium Chloride in Bunsen Flame.

NOTE FROM THE PROFESSOR: If you heat salts in a bunsen flame you varpourize some of the metal ions, in this case Calcium and some of the atoms have excess energy which they emit as light at particular wavelengths characteristic of that element. For Calcium this light is red but, as Debbie says, her sample of CaCl2 may have had some traces of NaCl in it.