What is a good scientific title that I can use for the following experiment?The experiment is rather simple: seeing the effects of certain drinks...

I understand what you're asking for here, and I know the
kind of title you probably need. I can't tell whether you're in high school or college,
so I'm not sure if you can get by with something a little more fun in terms of
wordplay.  Some words to play with, it seems to me, would include: erosion, corrosion,
dental erosion, acid erosion, acidity, effects, and operation.   So, how about something
like this--Can I Get You a Beverage?:  The Effects of Acid Erosion on Eggshells.  The
title would be stronger if a hint as toyour findingswere previewed in it somewhere, and
there are other kinds of catchy beverage-related sayings you might lead with, as well. 
How about "Coffee, Tea, or...(fill in the blank)." Hope that's enough to get you
started, anyway.  Interesting experiment, by the way!