Meets AP Science Practices 4, 5, and 6
- Addresses Big Idea 1 & 3
- Materials provided for 30 students working in pairs
- Investigation includes updated literature aligned with new AP Chemistry curriculum standards
In this kit students will determine the mass percent of copper in a brass sample. Students will design and interpret the results of an experiment regarding the absorption of light to determine the concentration of an absorbing species in a solution and be able to relate measured mass of substances to identify stoichiometric relationships for a reaction. Includes copper (II) sulfate solution, copper (II) nitrate solutions, zinc nitrate solution, zinc sulfate solution, iron nitrate solution, iron sulfate solution, concentrated nitric acid, sodium bicarbonate, 20 brass 0.22 caliber shell casings, and 10 brass screws. Requires spectrophotometer or colorimeter, and cuvettes, available separately.
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Includes:
Copper(II) Sulfate Solution
Copper(II) Nitrate Solutions
Zinc Nitrate Solution
Zinc Sulfate Solution
Iron(III) Nitrate Solution
Iron(III) Sulfate Solution
Nitric Acid
Sodium Bicarbonate
Brass Shell Casings
Brass Screws
Instructions
Required but Not Provided: Cuvettes, DI Water, Graduated Cylinders, Beakers, Test Tubes, Pipettes, Spectrophotometer or Colorimeter, Watchglass covers, Tape or marker, Graph paper, Lab notebook, Gloves, safety goggles, lab aprons and graphing software.
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