What do you know about gold? Compare your knowledge with the students of Ephrata.
VIDEO BY: adrienneAdams Central HS
VIDEO BY: FrankIntech Colliegiate High School
VIDEO BY: NealRockdale Magnet School
VIDEO BY: KatieSt. Joseph's Academy
VIDEO BY: AlexandraPut-in-Bay School
VIDEO BY: HannahHarborside Academy
VIDEO BY: KyleHebron High School
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Merck litmus paper, 1934
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