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CEOE OSAT Chemistry Field 04 Includes 27 competencies/skills found on the CEOE OSAT Chemistry test and 125 sample-test questions. This guide, aligned specifically to standards prescribed by the Oklahoma Department of Education, covers the sub-areas of Foundations of Scientific Inquiry; Matter and Atomic Structure; Energy, Chemical Bonds; and Molecular Structure; Chemical Reactions; and Interactions of Chemistry and the Environment.