Wednesday, November 17, 2010

7-Up and ... Lithium?

OK.  Another post that is not exactly related to creationism.

I'm currently listening to the podclass, Chemical Science (5.111), from MIT's OpenCourseWare.  The professor (Dr. Elizabeth Vogel Taylor) has done a real nice job presenting the quantum mechanics wavefunction concept - something about which I never had a good grasp.

Today, while commenting on the periodic table, she mentioned that in the early part of the last century (1900's) people thought that elements next to each other on the periodic table were thought to be somewhat interchangeable.

In the late 1920's, 7-Up (the soft drink that is today part of the Dr. Pepper group) was introduced as “Bib-Label Lithiated Lemon-Lime Soda” and which contained lithium citrate. The lithium remained in the drink until 1950.

I had heard about the cocaine in Coca-Cola, but I had not heard about the lithium in 7-Up.

A couple of side notes:  Sprite currently uses sodium citrate - sodium is next to (just below) lithium on the periodic table.  Today, lithium is sometimes prescribed to treat bipolar disorder.

By the way, I appreciate it when teachers and professors relate the subject matter to something else in one's experiences.  It gives us students something to hang the information on.