SDN Members don't see this ad. (About Ads) We are delighted to participate again in SDN's annual Test Prep Week. We will be offering 3 OAT Destroyers to the winners. Good luck to all. The OAT Destroyer encompasses a wide range of problems with detailed solutions that act as a teaching aid. The Biology section includes questions on plants, taxonomy, enzymes, evolution, embryology, biochemistry, genetics and more. The General Chemistry covers virtually every topic. Gas laws, stoichiometry, molecular geometry, acid-base, equilibria, kinetics, descriptive conceptual trends, electrochemistry, buffers, and more. The Organic chemistry details all the concepts needed to excel, including stereochemistry, SN1, SN2, E1, E2, Aldol, Wittig, Grignard, Claisen, Diels Alder, esterificatation, aromatcity, reaction drilling, nomenclature, and more. The Physics section includes vectors, energy, work, momentum, fluids, gravitation, circle motion, harmonic motion, electrostatics, circuits, magnetism, induction and optics, to name a few.