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 confront man armed with bat during interview about downtown 'problem spot'

    Police confront man armed with bat during interview about downtown 'problem spot'

    Thursday, May 24 2018 2:28 AM EDT2018-05-24 06:28:47 GMT

    SPOKANE, Wash. - Crime is becoming a growing concern in parts of downtown Spokane-- and police are getting all to familiar with it. The worse it gets, the fewer people want to spend time there-- which only creates a vicious cycle. Tonight while while we were in the downtown neighborhood, we saw firsthand what businesses and police are worried about and say they see every day. "I think most areas are overall safe," Officer John O'Brien 

    >>

    SPOKANE, Wash. - Crime is becoming a growing concern in parts of downtown Spokane-- and police are getting all to familiar with it. The worse it gets, the fewer people want to spend time there-- which only creates a vicious cycle. Tonight while while we were in the downtown neighborhood, we saw firsthand what businesses and police are worried about and say they see every day. "I think most areas are overall safe," Officer John O'Brien 

    >>
  • Case of Legionnaires' disease suspected at UW Medical Center

    Case of Legionnaires' disease suspected at UW Medical Center

    Thursday, May 24 2018 2:25 AM EDT2018-05-24 06:25:20 GMT

    SEATTLE, Wash. (AP) - A case of Legionnaires' disease has been suspected at the University of Washington Medical Center. KOMO-TV reported Wednesday that this is the third time in as many years that the disease has been suspected at the facility. Officials said the patient "has been diagnosed with a highly probable health care associated Legionella pneumonia." Officials said the patient is in satisfactory condition and is responding well to treatment. ...

    >>

    SEATTLE, Wash. (AP) - A case of Legionnaires' disease has been suspected at the University of Washington Medical Center. KOMO-TV reported Wednesday that this is the third time in as many years that the disease has been suspected at the facility. Officials said the patient "has been diagnosed with a highly probable health care associated Legionella pneumonia." Officials said the patient is in satisfactory condition and is responding well to treatment. ...

    >>
  • Deadliest Catch' star pleads guilty to misdemeanor assault

    Deadliest Catch' star pleads guilty to misdemeanor assault

    Wednesday, May 23 2018 5:32 PM EDT2018-05-23 21:32:34 GMT
    Sig HansenSig Hansen
    Sig HansenSig Hansen

    SEATTLE, Wash. (AP) - Celebrity crab-boat captain Sig Hansen has pleaded guilty to a misdemeanor charge that he spat on an Uber driver last year in Seattle. The Seattle Times reports the 52-year-old "Deadliest Catch" star pleaded guilty Wednesday. Under the plea deal, a property destruction charge was dismissed. Prosecutors also recommended the assault conviction be dropped and the case dismissed if Hansen complies with court conditions for a yea...

    >>

    SEATTLE, Wash. (AP) - Celebrity crab-boat captain Sig Hansen has pleaded guilty to a misdemeanor charge that he spat on an Uber driver last year in Seattle. The Seattle Times reports the 52-year-old "Deadliest Catch" star pleaded guilty Wednesday. Under the plea deal, a property destruction charge was dismissed. Prosecutors also recommended the assault conviction be dropped and the case dismissed if Hansen complies with court conditions for a yea...

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

  • Teacher shows proof parents are less involved in children's lives today

    Teacher shows proof parents are less involved in children's lives today

    Thursday, May 24 2018 10:37 AM EDT2018-05-24 14:37:36 GMT

    KHQ.COM - A Facebook post from a teacher in Georgia has gone viral with more than 174,000 shares and she highlights one of the biggest changes she's noticed in her 15 years of teaching that could also be a contributing factor to gun violence in our schools. Amie Diprima Brown believes more and more parents are checking out from their child's academic process and she has a stack of letters to prove it.

    >>

    KHQ.COM - A Facebook post from a teacher in Georgia has gone viral with more than 174,000 shares and she highlights one of the biggest changes she's noticed in her 15 years of teaching that could also be a contributing factor to gun violence in our schools. Amie Diprima Brown believes more and more parents are checking out from their child's academic process and she has a stack of letters to prove it.

    >>
  • Woman killed in crash near Otis Orchards

    Woman killed in crash near Otis Orchards

    Thursday, May 24 2018 10:26 AM EDT2018-05-24 14:26:43 GMT

    OTIS ORCHARDS, Wash. - A woman was killed in a crash in the Otis Orchards area Thursday morning.  The crash happened near the intersection of Wellesley and Ashton. Details are limited at this time, but the car was found behind a tree and the woman driving has died, according to deputies on scene.  The intersection is closed down and motorists are asked to avoid the area. 

    >>

    OTIS ORCHARDS, Wash. - A woman was killed in a crash in the Otis Orchards area Thursday morning.  The crash happened near the intersection of Wellesley and Ashton. Details are limited at this time, but the car was found behind a tree and the woman driving has died, according to deputies on scene.  The intersection is closed down and motorists are asked to avoid the area. 

    >>
  • Trump cancels June 12 summit with North Korea's

    Trump cancels June 12 summit with North Korea's

    Thursday, May 24 2018 9:56 AM EDT2018-05-24 13:56:14 GMT

    WASHINGTON (AP) - President Donald Trump is canceling the planned June 12 summit with North Korea's Kim Jong Un, citing the "tremendous anger and open hostility" in a recent statement from North Korea. Trump says in a letter to Kim released Thursday by the White House that based on the statement, he felt it was "inappropriate, at this time, to have this long-planned meeting."

    >>

    WASHINGTON (AP) - President Donald Trump is canceling the planned June 12 summit with North Korea's Kim Jong Un, citing the "tremendous anger and open hostility" in a recent statement from North Korea. Trump says in a letter to Kim released Thursday by the White House that based on the statement, he felt it was "inappropriate, at this time, to have this long-planned meeting."

    >>