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Step 4The Next Morning...
After the acid has finished reacting with the zinc, you will be left with a thin copper foil and a copper shell of a penny only one thousandth of an inch thick!
The shell will be very fragile, so use tweezers or a cotton swab to pull it out of the acid.
You can rinse the shell in the sink with some tap water.
NEVER, NEVER pour water into acid. Dispose of the acid by pouring it in the sink and then rinsing it down with water.
You can also neutralize the acid with some baking soda.
The shell will be very fragile, so use tweezers or a cotton swab to pull it out of the acid.
You can rinse the shell in the sink with some tap water.
NEVER, NEVER pour water into acid. Dispose of the acid by pouring it in the sink and then rinsing it down with water.
You can also neutralize the acid with some baking soda.
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