1. Pennies to Silver and Gold

2. Pennies to Silver and Gold
Materials
Safety Glasses
Gloves
Tongs
Glass Beakers
Electric Burner
Penny
100 mL NaOH solution (50mL per 1000 mL H2O)
1/8 tsp Pixie Dust (Zinc powder)

3. Pennies to Silver and Gold
Observations 1: What year is your penny? Where was it minted? Mass of your penny? Any other identifiable characteristics:

4. Pennies to Silver and Gold
Procedure
Pour 100 mL of NaOH solution into a beaker
Bring to a boil on the Electric Burner
Add 1/8 tsp Pixie dust into the beaker
Place pennies into the beaker
Boil 4 minutes
Remove beaker from the burner
Remove pennies
Rinse the pennies

5. Pennies to Silver and Gold
Observations 2 : What happened to the pennies? What is the mass of the penny now? Is this a physical or chemical change?

6. Pennies to Silver and Gold
Procedure
Give Mr. Sherman your silver penny
Apply heat to the silver penny

7. Pennies to Silver and Gold
Observations 3: What happened to the pennies? What is the mass of the penny? Is this a physical or chemical change?