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Test Center Closings Make sure your test center is open and find out what to do if it's not. History U.

Duke University. There are currently 20 different tests, 12 of which are foreign language. Descriptive chemistry Including common elements, nomenclature of ions and compounds, periodic trends in chemical and physical properties of the elements, reactivity of elements and prediction of products of chemical reactions, examples of simple organic compounds and compounds of environmental concern.