Professor Ray A. Gross, Jr.
Department of Physical Sciences and Engineering, Prince George's Community College, 301 Largo Road, Largo, MD 20774
· Qualitative Organic Analysis at the Undergraduate Level
· Assessment Techniques for Sophomore Organic Chemistry
· Fundamentals of Structure and Bonding
Contributions in Qualitative Organic Analysis
· A method for determining the number of triple bonds, double bonds, and rings in a hydrocarbon as well as the number of rings cleaved by ozonation followed by a reductive workup.
· An equation that relates the number of p bonds and rings in an organic compound to the number of carbon, hydrogen and heteroatoms in the formula of the compound.
· A unit-sample equation for finding the number of bromine and chlorine atoms in the formula of a polybromo and polychloro organic compound from the molecular-ion abundances in a mass spectrum.
· A chlorine rule for finding the number of chlorine atoms in compounds that contain C, H, O, N, S, and Si atoms in addition to n Cl and m Br atoms from low-resolution mass spectra of the compounds.
· A method for factoring numeric isotope patterns such as 27:81:80:46:11:1.
· A method for fractionating unit samples of Br and Cl containing compounds into sets of unique and non-unique molecular populations.
· An improved method for finding the number of sulfur atoms in an unknown by low-resolution mass spectrometry.
· An automated isotope-pattern analyzer for finding the Br, Cl, S stoichiometry by low-resolution mass spectrometry.
· A method for finding the number of carbon-carbon double and triple bonds in an analyte by bond analysis of its ozonolysis reaction.
Contributions in Assessment
· A method for the simultaneous assessment of cognitive and content domains.
· One-reaction structure determinations for enhancing students' cognitive skills.
· Development of the use of anathons as a tool to create and assist in the solution of problems.
Contributions in Forensic Chemistry
· A sophomore-level instrumental analysis course and lab manual.
Twenty Years Teaching Experience
Prior to coming to Prince George’s Community College, Dr. Gross was a teaching assistant at the University of Tulsa and at the University of Oklahoma; he also served as an adjunct professor at Northern Virginia Community College-Annandale, Montgomery College (Germantown and Takoma Park Campuses), and Georgetown University. He served for three years while on active duty in the US Army as an instructor and assistant professor of chemistry at the United States Military Academy at West Point, NY. Dr. Gross joined the faculty of PGCC as an associate professor in 1998 and was promoted to professor in June 2003. He is included in the 9th (2004-2005) and 10th (2005-2006) editions of "Who's Who Among America's College Teachers" and was also selected for "Who's Who in Collegiate Faculty 2006-2007."