Marsilio Mark Langella has been teaching college chemistry for 34 years. He is a 31-year retired AP Chemistry instructor at Mahopac High School in New York and an active adjunct chemistry professor at Westchester Community College and now full time Clinical Laboratory Professor at �Թϱ��� University.   He received a BA in Chemistry from Manhattan College, and a MA in Science Education from Lehman College. He is also a NYS certified chemistry and chemical technology instructor. He is also the author of numerous published experimental kits and AP chemistry labs for FLINN Scientific. He is also a developer for Mini-Concepts Custom Designed Chemistry Lab Kits.