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Grades 912.
Find a Silver Lining
Students silver the inside of a glass vial using a procedure similar to the Tollens' test, with dextrose as the reducing sugar that reduces silver ions to metallic silver. Kit includes enough vials and chemicals for 30 students to make their own silver vials.
Reinforce and Balance Redox Reactions
After rotating through the 6 stations and creating their silver vials, students write and balance equations for the reduction of silver oxide to metallic silver by dextrose. They also write and balance an equation for the formation of a precipitate intermediary. Students consider the role of stoichiometry in commercial applications and then model or explain the chemistry of this activity on an atomic level.
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