Extreme Science: Penny Shine - NBC Right Now/KNDO/KNDU Tri-Cities, Yakima, WA |

Extreme Science

Extreme Science: Penny Shine

Posted:

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

  • Spokane Police investigating kidnapping of 6-month-old baby; Suspect in custody

    Spokane Police investigating kidnapping of 6-month-old baby; Suspect in custody

    Friday, November 17 2017 6:06 PM EST2017-11-17 23:06:21 GMT

    SPOKANE, Wash. - A 6-month-old child is in protective custody and a suspect has been detained as Spokane Police investigate a kidnapping early Friday morning.  Police said in a press released they made contact with a man outside of the Public Safety Building early Friday morning just before 2:30 a.m. The man had two children who were not related to him, but had been left in his custody. 

    More >>

    SPOKANE, Wash. - A 6-month-old child is in protective custody and a suspect has been detained as Spokane Police investigate a kidnapping early Friday morning.  Police said in a press released they made contact with a man outside of the Public Safety Building early Friday morning just before 2:30 a.m. The man had two children who were not related to him, but had been left in his custody. 

    More >>
  • Man arrested, gun seized after threats to Seattle church

    Man arrested, gun seized after threats to Seattle church

    Friday, November 17 2017 6:05 PM EST2017-11-17 23:05:44 GMT

    SEATTLE, Wash. (AP) - Police arrested a 25-year-old suburban Seattle man and seized his AR-15 rifle after he allegedly sent a series of escalating messages to pastors at a Seattle church. The Seattle Police Department said Thursday the man from Covington was arrested on a charge of felony harassment. Police say the man had attended the unnamed church in the University District neighborhood but staff had not heard from him since he threatened to burn down the church over a y...

    More >>

    SEATTLE, Wash. (AP) - Police arrested a 25-year-old suburban Seattle man and seized his AR-15 rifle after he allegedly sent a series of escalating messages to pastors at a Seattle church. The Seattle Police Department said Thursday the man from Covington was arrested on a charge of felony harassment. Police say the man had attended the unnamed church in the University District neighborhood but staff had not heard from him since he threatened to burn down the church over a y...

    More >>
  • Washington Potato Co. settles discrimination claim

    Washington Potato Co. settles discrimination claim

    Friday, November 17 2017 6:03 PM EST2017-11-17 23:03:24 GMT

    KENNEWICK, Wash. (AP) - Washington Potato Co. has agreed to pay a $100,000 civil penalty to settle a discrimination claim involving Freeze Pack, its Pasco vegetable processing plant. The Tri-City Herald reports that the U.S. Department of Justice announced the settlement on Thursday. The agreement resolves an investigation into whether the company discriminated against immigrants by requiring different documents than it did for U.S. citizens. The Immigration and Nationality A...

    More >>

    KENNEWICK, Wash. (AP) - Washington Potato Co. has agreed to pay a $100,000 civil penalty to settle a discrimination claim involving Freeze Pack, its Pasco vegetable processing plant. The Tri-City Herald reports that the U.S. Department of Justice announced the settlement on Thursday. The agreement resolves an investigation into whether the company discriminated against immigrants by requiring different documents than it did for U.S. citizens. The Immigration and Nationality A...

    More >>