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MR / Schenectady, New York. Schenectady High School (urban, public high school). Grade 10 chemistry lab. One of a series of photographs taken during a chemistry lab in which students explore the properties of acids and bases. Students (Boy; 15, Korean-American and Caucasian; Boy; 16) make observations after experimenting with adding different acidic solutions (Hydrochloric Acid and Acetic Acid) to small amounts of metals (zinc, magnesium, iron, and copper) in ceramic tray. ID: AJ-g10p. MR: Dic4, Ken9. ©Ellen B. Senisi