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>>

  • Washington's new DUI-E law takes effect Sunday

    Washington's new DUI-E law takes effect Sunday

    Tuesday, July 18 2017 10:02 PM EDT2017-07-19 02:02:25 GMT

    SPOKANE, Wash. - "He was my youngest, he was my baby bear," Tina Myer said about her son that was killed by a distracted driver. It was a distracted driver that killed Tina Myer's son Cody, hitting the 23-year-old as he was working as a flagger at a construction site in December 2015. He suffered severe injuries, and died several months later. Now Myer is joining Governor Inslee, praising a new DUI-E law.

    >>

    SPOKANE, Wash. - "He was my youngest, he was my baby bear," Tina Myer said about her son that was killed by a distracted driver. It was a distracted driver that killed Tina Myer's son Cody, hitting the 23-year-old as he was working as a flagger at a construction site in December 2015. He suffered severe injuries, and died several months later. Now Myer is joining Governor Inslee, praising a new DUI-E law.

    >>
  • Court docs: 3 month old baby with severe brain trauma taken to ICU

    Court docs: 3 month old baby with severe brain trauma taken to ICU

    Wednesday, July 19 2017 8:24 PM EDT2017-07-20 00:24:22 GMT
    Court docs: 3 month old baby with severe brain trauma taken to ICUCourt docs: 3 month old baby with severe brain trauma taken to ICU

    SPOKANE, Wash. - Spokane Police Officers were called to Sacred Heart Children's Hospital Friday after receiving word that a three month old baby had arrived at the Intensive Care Unit with severe brain trauma. Court documents say the parents took the baby to the Holy Family Hospital, where the injuries were deemed severe. The baby was then taken by ambulance to Sacred Heart. According to the documents, a CPS caseworker says one 

    >>

    SPOKANE, Wash. - Spokane Police Officers were called to Sacred Heart Children's Hospital Friday after receiving word that a three month old baby had arrived at the Intensive Care Unit with severe brain trauma. Court documents say the parents took the baby to the Holy Family Hospital, where the injuries were deemed severe. The baby was then taken by ambulance to Sacred Heart. According to the documents, a CPS caseworker says one 

    >>
  • Man with previous ties to Coeur d'Alene and Spokane wanted by the FBI on meth trafficking charges

    Man with previous ties to Coeur d'Alene and Spokane wanted by the FBI on meth trafficking charges

    Wednesday, July 19 2017 5:57 PM EDT2017-07-19 21:57:16 GMT

    SPOKANE, Wash. - The FBI is looking for a convicted felon they believe is involved in trafficking methamphetamine in Montana.  33-year-old Chase Storlie initially had a federal arrest warrant issued for him in Montana on June 9 for failure to appear at his arraignment in Helena. Storlie was previously charged on April 26, 2017, with conspiracy to distribute and possess with intent to distribute methamphetamine, possession with intent to distribute meth.

    >>

    SPOKANE, Wash. - The FBI is looking for a convicted felon they believe is involved in trafficking methamphetamine in Montana.  33-year-old Chase Storlie initially had a federal arrest warrant issued for him in Montana on June 9 for failure to appear at his arraignment in Helena. Storlie was previously charged on April 26, 2017, with conspiracy to distribute and possess with intent to distribute methamphetamine, possession with intent to distribute meth.

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

  • One woman dead after mobile home fire in Elk

    One woman dead after mobile home fire in Elk

    Thursday, July 20 2017 9:44 AM EDT2017-07-20 13:44:42 GMT

    ELK, Wash. - One woman is dead after an early morning mobile home fire in Elk, Washington.  Firefighters responded to the fire in the heavily wooded area to find the home engulfed in flames. Two people were inside the home when the flames broke out. Crews say they were alerted by smoke detectors,

    >>

    ELK, Wash. - One woman is dead after an early morning mobile home fire in Elk, Washington.  Firefighters responded to the fire in the heavily wooded area to find the home engulfed in flames. Two people were inside the home when the flames broke out. Crews say they were alerted by smoke detectors,

    >>
  • WATCH: Bear rides motorcycle in Russia

    WATCH: Bear rides motorcycle in Russia

    Thursday, July 20 2017 9:37 AM EDT2017-07-20 13:37:26 GMT

    RUSSIA - Drivers in northern Russia got quite a show when two bikers decided to take their motorcycle for a ride. this was no ordinary cruise as the duo had a live bear riding with them in their sidecar.  the very well-trained bear named Tim sat calmly in his seat while even waving at cars and folks passing by. the bikers and their 250-pound bear, are actually part of a traveling circus run by the local bike club that regularly makes appearances. 

    >>

    RUSSIA - Drivers in northern Russia got quite a show when two bikers decided to take their motorcycle for a ride. this was no ordinary cruise as the duo had a live bear riding with them in their sidecar.  the very well-trained bear named Tim sat calmly in his seat while even waving at cars and folks passing by. the bikers and their 250-pound bear, are actually part of a traveling circus run by the local bike club that regularly makes appearances. 

    >>
  • OJ Simpson draws world attention in plea for freedom

    OJ Simpson draws world attention in plea for freedom

    Thursday, July 20 2017 8:39 AM EDT2017-07-20 12:39:32 GMT

    LOVELOCK, Nev. - Former football star and convicted felon O.J. Simpson will command the world's attention once again Thursday when he pleads for his freedom on live TV. Simpson received a 33-year sentence in 2008 for an armed robbery involving two sports memorabilia dealers in a Las Vegas hotel room. 

    >>

    LOVELOCK, Nev. - Former football star and convicted felon O.J. Simpson will command the world's attention once again Thursday when he pleads for his freedom on live TV. Simpson received a 33-year sentence in 2008 for an armed robbery involving two sports memorabilia dealers in a Las Vegas hotel room. 

    >>