Silver to Gold Penny Crossword

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