Across
- 3. to heat up the solution
- 5. type of water the pennies have to be rinsed off in
- 7. important to wear for hand safety
- 8. what to mix your solutions in
Down
- 1. important to wear for eye safety
- 2. final product of the penny
- 4. what to use to move the pennies
- 6. first product of the penny