Extreme Science: Penny Shine - Spokane, North Idaho News & Weather KHQ.com

Extreme Science

Extreme Science: Penny Shine

Join us every Saturday morning for Extreme Science with Radical Rick. This week Rick shows us how to 'shine a penny' with science!

Here's what you need for this experiment:

  1. Several tarnished (dark) pennies
  2. Small plate
  3. Hot sauce or taco sauce
  4. Sink (to rinse pennies)
  5. Electrical tape (optional)
  6. Adult supervision

Procedure:

  1. Place your pennies on your plate.
  2. Pour some taco sauce over your pennies.
  3. Using your finger, gently rub the taco sauce into the penny. Do not lick your hands afterwards as the pennies are filthy and disgusting! Also, be careful if you have any small cuts in your fingers as the taco sauce may irritate it.
  4. Let the pennies sit for 2 – 3 minutes while you wash your hands.
  5. Rinse the pennies off and check out the difference!

What is going on?

There are actually several things that you can use to clean pennies such as lemon juice and salt, vinegar and salt or, your favorite taco sauce! If you took the ingredients of the taco sauce such as tomato paste, vinegar or salt and tried to clean the pennies separately, you wouldn't get them very clean. When salt is dissolved in the vinegar as it is in the taco sauce, the salt breaks down into sodium and chloride ions. The chloride ions will combine with the copper in the penny to remove the tarnish form its surface.

Try this:

  • Try covering half of a penny with some electrical tape prior to cleaning it with the taco sauce. Afterwards, when you remove the tape you can see how much tarnish was actually removed.
  • Try a mixture of vinegar and salt to clean some more pennies. Does this solution work any better than the taco sauce?
  • Try mixing a solution of lemon juice and salt to clean some pennies. How does this solution compare to your previous attempts?
  • Try using different brands of taco sauce. Is there any difference in how well each brand cleans the pennies?
  • Most Popular StoriesMost Popular StoriesMore>>

  • Police release new photo of Manchester bombing suspect, ask for help

    Police release new photo of Manchester bombing suspect, ask for help

    Saturday, May 27 2017 5:23 PM EDT2017-05-27 21:23:18 GMT

    MANCHESTER, England - Manchester Police have released a new photo of the man suspected of killing 22 people in a suicide bombing at Manchester Arena after an Ariana Grande concert on Monday. In the photo released Saturday shows 22-year-old suspect Salman Abedi in a brown hat, jeans, glasses and a black Hollister vest. The background is blacked out.

    >>

    MANCHESTER, England - Manchester Police have released a new photo of the man suspected of killing 22 people in a suicide bombing at Manchester Arena after an Ariana Grande concert on Monday. In the photo released Saturday shows 22-year-old suspect Salman Abedi in a brown hat, jeans, glasses and a black Hollister vest. The background is blacked out.

    >>
  • Police: Woman locked her kids in car trunk while she shopped

    Police: Woman locked her kids in car trunk while she shopped

    Saturday, May 27 2017 4:26 PM EDT2017-05-27 20:26:48 GMT

    RIVERDALE, Utah (AP) - A 39-year-old Utah woman has been arrested after she allegedly locked her two young children in her car's trunk while she went inside a Wal-Mart store to shop. Riverdale police say witnesses heard the children ages 2 and 5 making noise and saw the car shaking, got the older child to pull the emergency latch and called 911.

    >>

    RIVERDALE, Utah (AP) - A 39-year-old Utah woman has been arrested after she allegedly locked her two young children in her car's trunk while she went inside a Wal-Mart store to shop. Riverdale police say witnesses heard the children ages 2 and 5 making noise and saw the car shaking, got the older child to pull the emergency latch and called 911.

    >>
  • Counterfeit cash getting more advanced in Spokane

    Counterfeit cash getting more advanced in Spokane

    Saturday, May 27 2017 10:05 PM EDT2017-05-28 02:05:41 GMT

    SPOKANE, Wash. - We've told you of counterfeit money being used to buy Girl Scout cookies, and movie money used at a gas station. Now a Spokane bank teller tells KHQ some counterfeiters are getting more advanced with their forgeries. "The first time it came to us as a local business who received two of them and they were just making a regular deposit," she said.

    >>

    SPOKANE, Wash. - We've told you of counterfeit money being used to buy Girl Scout cookies, and movie money used at a gas station. Now a Spokane bank teller tells KHQ some counterfeiters are getting more advanced with their forgeries. "The first time it came to us as a local business who received two of them and they were just making a regular deposit," she said.

    >>
HD DOPPLER 6i
/
  • Top Stories from KHQHomeMore>>

  • Spokane man honors the fallen with flowers

    Spokane man honors the fallen with flowers

    Saturday, May 27 2017 10:15 PM EDT2017-05-28 02:15:36 GMT

    SPOKANE, Wash. - Thousands of flags line Memorial Cemetery this weekend to honor those who died serving our country "I really feel that doing my little part... For instance by putting flowers on veterans I never met or known, is my way thanking them," said Mike Cavanaugh. Mike has been doing this for over 30 years. Going to graves of veteran's he has never met.

    >>

    SPOKANE, Wash. - Thousands of flags line Memorial Cemetery this weekend to honor those who died serving our country "I really feel that doing my little part... For instance by putting flowers on veterans I never met or known, is my way thanking them," said Mike Cavanaugh. Mike has been doing this for over 30 years. Going to graves of veteran's he has never met.

    >>
  • Counterfeit cash getting more advanced in Spokane

    Counterfeit cash getting more advanced in Spokane

    Saturday, May 27 2017 10:05 PM EDT2017-05-28 02:05:41 GMT

    SPOKANE, Wash. - We've told you of counterfeit money being used to buy Girl Scout cookies, and movie money used at a gas station. Now a Spokane bank teller tells KHQ some counterfeiters are getting more advanced with their forgeries. "The first time it came to us as a local business who received two of them and they were just making a regular deposit," she said.

    >>

    SPOKANE, Wash. - We've told you of counterfeit money being used to buy Girl Scout cookies, and movie money used at a gas station. Now a Spokane bank teller tells KHQ some counterfeiters are getting more advanced with their forgeries. "The first time it came to us as a local business who received two of them and they were just making a regular deposit," she said.

    >>
  • Emergency crews pull man from river in Spokane Valley

    Emergency crews pull man from river in Spokane Valley

    Saturday, May 27 2017 8:48 PM EDT2017-05-28 00:48:07 GMT

    SPOKANE VALLEY, Wash. - Emergency rescue crews pulled a man from the Spokane River in the middle of training to do that exact thing. The Spokane Valley Fire Department reports that a man jumped from the Trent bridge just east of N. Pines Rd. into the Spokane River. The SVFD Special Operations team just happened to already be in the area conducting swift water training at the time and were able to quickly respond with Spokane County Sheriff's Deputies who were also near by.

    >>

    SPOKANE VALLEY, Wash. - Emergency rescue crews pulled a man from the Spokane River in the middle of training to do that exact thing. The Spokane Valley Fire Department reports that a man jumped from the Trent bridge just east of N. Pines Rd. into the Spokane River. The SVFD Special Operations team just happened to already be in the area conducting swift water training at the time and were able to quickly respond with Spokane County Sheriff's Deputies who were also near by.

    .

    >>