13-LETTER WORDS
'(<a href="http://www.j-archive.com/media/2008-01-18_DJ_28.wmv">Jon of the Clue Crew plop, plops 2 tablets in a glass; they fizz, fizz.</a>)  When you drop Alka-Seltzer in water, a series of reactions, including the release of carbon dioxide, creates this bubbly effect, from the Latin for "begin to boil"'
effervescence